697887940 has 12 divisors (see below), whose sum is σ = 1465564716. Its totient is φ = 279155168.

The previous prime is 697887877. The next prime is 697887943. The reversal of 697887940 is 49788796.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90364036 + 607523904 = 9506^2 + 24648^2 .

It is not an unprimeable number, because it can be changed into a prime (697887943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17447179 + ... + 17447218.

It is an arithmetic number, because the mean of its divisors is an integer number (122130393).

Almost surely, 2^697887940 is an apocalyptic number.

It is an amenable number.

697887940 is an abundant number, since it is smaller than the sum of its proper divisors (767676776).

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

697887940 is a wasteful number, since it uses less digits than its factorization.

697887940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34894406 (or 34894404 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 58.

The square root of 697887940 is about 26417.5687753434. The cubic root of 697887940 is about 887.0100989950.

The spelling of 697887940 in words is "six hundred ninety-seven million, eight hundred eighty-seven thousand, nine hundred forty".