694796881 has 9 divisors (see below), whose sum is σ = 712493019. Its totient is φ = 677531736.

The previous prime is 694796873. The next prime is 694796897. The reversal of 694796881 is 188697496.

The square root of 694796881 is 26359.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2265025 + 692531856 = 1505^2 + 26316^2 .

It is not a de Polignac number, because 694796881 - 2³ = 694796873 is a prime.

It is a super-2 number, since 2×694796881² = 965485411694656322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694790881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1133131 + ... + 1133743.

It is an arithmetic number, because the mean of its divisors is an integer number (79165891).

Almost surely, 2^694796881 is an apocalyptic number.

694796881 is the 26359-th square number.

694796881 is the 13180-th centered octagonal number.

It is an amenable number.

694796881 is a deficient number, since it is larger than the sum of its proper divisors (17696138).

694796881 is an frugal number, since it uses more digits than its factorization.

694796881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 656 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The cubic root of 694796881 is about 885.6985902067.

The spelling of 694796881 in words is "six hundred ninety-four million, seven hundred ninety-six thousand, eight hundred eighty-one".