997260290664 has 96 divisors (see below), whose sum is σ = 2767538884320. Its totient is φ = 299207920000.

The previous prime is 997260290641. The next prime is 997260290683. The reversal of 997260290664 is 466092062799.

It is a junction number, because it is equal to n+sod(n) for n = 997260290598 and 997260290607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1406742 + ... + 1993349.

It is an arithmetic number, because the mean of its divisors is an integer number (28828530045).

Almost surely, 2^997260290664 is an apocalyptic number.

It is an amenable number.

997260290664 is an abundant number, since it is smaller than the sum of its proper divisors (1770278593656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997260290664 is a wasteful number, since it uses less digits than its factorization.

997260290664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400223 (or 3400208 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 60.

The spelling of 997260290664 in words is "nine hundred ninety-seven billion, two hundred sixty million, two hundred ninety thousand, six hundred sixty-four".