752497681 has 6 divisors (see below), whose sum is σ = 814834950. Its totient is φ = 694613088.

The previous prime is 752497663. The next prime is 752497699. The reversal of 752497681 is 186794257.

It is an interprime number because it is at equal distance from previous prime (752497663) and next prime (752497699).

It can be written as a sum of positive squares in 3 ways, for example, as 5022081 + 747475600 = 2241^2 + 27340^2 .

It is not a de Polignac number, because 752497681 - 2⁵ = 752497649 is a prime.

It is a super-2 number, since 2×752497681² = 1132505519820755522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (752497621) 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 5 ways as a sum of consecutive naturals, for example, 2226156 + ... + 2226493.

It is an arithmetic number, because the mean of its divisors is an integer number (135805825).

Almost surely, 2^752497681 is an apocalyptic number.

It is an amenable number.

752497681 is a deficient number, since it is larger than the sum of its proper divisors (62337269).

752497681 is a wasteful number, since it uses less digits than its factorization.

752497681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452675 (or 4452662 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 752497681 is about 27431.6911800931. The cubic root of 752497681 is about 909.5677539011.

The spelling of 752497681 in words is "seven hundred fifty-two million, four hundred ninety-seven thousand, six hundred eighty-one".