997967841 has 32 divisors (see below), whose sum is σ = 1483840512. Its totient is φ = 592462080.

The previous prime is 997967821. The next prime is 997967843. The reversal of 997967841 is 148769799.

It is not a de Polignac number, because 997967841 - 2⁶ = 997967777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997967843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 449851 + ... + 452063.

It is an arithmetic number, because the mean of its divisors is an integer number (46370016).

Almost surely, 2^997967841 is an apocalyptic number.

It is an amenable number.

997967841 is a deficient number, since it is larger than the sum of its proper divisors (485872671).

997967841 is a wasteful number, since it uses less digits than its factorization.

997967841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633.

The product of its digits is 6858432, while the sum is 60.

The square root of 997967841 is about 31590.6290060834. The cubic root of 997967841 is about 999.3221542957.

The spelling of 997967841 in words is "nine hundred ninety-seven million, nine hundred sixty-seven thousand, eight hundred forty-one".