696671872 has 64 divisors (see below), whose sum is σ = 1546309800. Its totient is φ = 310431744.

The previous prime is 696671867. The next prime is 696671891. The reversal of 696671872 is 278176696.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 490002496 + 206669376 = 22136^2 + 14376^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41038 + ... + 55474.

Almost surely, 2^696671872 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 696671872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773154900).

696671872 is an abundant number, since it is smaller than the sum of its proper divisors (849637928).

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

696671872 is a wasteful number, since it uses less digits than its factorization.

696671872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14493 (or 14481 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 52.

The square root of 696671872 is about 26394.5424661993. The cubic root of 696671872 is about 886.4945951603.

The spelling of 696671872 in words is "six hundred ninety-six million, six hundred seventy-one thousand, eight hundred seventy-two".