697877856 has 240 divisors, whose sum is σ = 2241162000. Its totient is φ = 211756032.

The previous prime is 697877777. The next prime is 697877867. The reversal of 697877856 is 658778796.

It is a junction number, because it is equal to n+sod(n) for n = 697877793 and 697877802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4683670 + ... + 4683818.

It is an arithmetic number, because the mean of its divisors is an integer number (9338175).

Almost surely, 2^697877856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697877856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120581000).

697877856 is an abundant number, since it is smaller than the sum of its proper divisors (1543284144).

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

697877856 is a wasteful number, since it uses less digits than its factorization.

697877856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 306 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The square root of 697877856 is about 26417.3779168183. The cubic root of 697877856 is about 887.0058267461.

The spelling of 697877856 in words is "six hundred ninety-seven million, eight hundred seventy-seven thousand, eight hundred fifty-six".