897657879950 has 96 divisors (see below), whose sum is σ = 1870059287712. Its totient is φ = 318427200000.

The previous prime is 897657879947. The next prime is 897657879997. The reversal of 897657879950 is 59978756798.

It is a super-2 number, since 2×897657879950² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1441700 + ... + 1968200.

It is an arithmetic number, because the mean of its divisors is an integer number (19479784247).

Almost surely, 2^897657879950 is an apocalyptic number.

897657879950 is an abundant number, since it is smaller than the sum of its proper divisors (972401407762).

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

897657879950 is a wasteful number, since it uses less digits than its factorization.

897657879950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526630 (or 526625 counting only the distinct ones).

The product of its (nonzero) digits is 2400451200, while the sum is 80.

The spelling of 897657879950 in words is "eight hundred ninety-seven billion, six hundred fifty-seven million, eight hundred seventy-nine thousand, nine hundred fifty".