696680648 has 8 divisors (see below), whose sum is σ = 1306276230. Its totient is φ = 348340320.

The previous prime is 696680623. The next prime is 696680681. The reversal of 696680648 is 846086696.

It can be written as a sum of positive squares in only one way, i.e., 544848964 + 151831684 = 23342^2 + 12322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 696680648.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43542533 + ... + 43542548.

Almost surely, 2^696680648 is an apocalyptic number.

It is an amenable number.

696680648 is a deficient number, since it is larger than the sum of its proper divisors (609595582).

696680648 is a wasteful number, since it uses less digits than its factorization.

696680648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87085087 (or 87085083 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 53.

The square root of 696680648 is about 26394.7087121643. The cubic root of 696680648 is about 886.4983175459.

The spelling of 696680648 in words is "six hundred ninety-six million, six hundred eighty thousand, six hundred forty-eight".