897078857464 has 32 divisors (see below), whose sum is σ = 1688343695280. Its totient is φ = 446854351104.

The previous prime is 897078857431. The next prime is 897078857531. The reversal of 897078857464 is 464758870798.

It is a super-2 number, since 2×897078857464² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17296579 + ... + 17348365.

Almost surely, 2^897078857464 is an apocalyptic number.

It is an amenable number.

897078857464 is a deficient number, since it is larger than the sum of its proper divisors (791264837816).

897078857464 is a wasteful number, since it uses less digits than its factorization.

897078857464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59887 (or 59883 counting only the distinct ones).

The product of its (nonzero) digits is 758661120, while the sum is 73.

The spelling of 897078857464 in words is "eight hundred ninety-seven billion, seventy-eight million, eight hundred fifty-seven thousand, four hundred sixty-four".