695251872 has 144 divisors (see below), whose sum is σ = 2272233600. Its totient is φ = 197531136.

The previous prime is 695251859. The next prime is 695251913. The reversal of 695251872 is 278152596.

695251872 is a `hidden beast` number, since 69 + 5 + 2 + 518 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 400318 + ... + 402050.

It is an arithmetic number, because the mean of its divisors is an integer number (15779400).

Almost surely, 2^695251872 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 695251872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1136116800).

695251872 is an abundant number, since it is smaller than the sum of its proper divisors (1576981728).

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

695251872 is a wasteful number, since it uses less digits than its factorization.

695251872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955 (or 1944 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 695251872 is about 26367.6292449663. The cubic root of 695251872 is about 885.8918826469.

The spelling of 695251872 in words is "six hundred ninety-five million, two hundred fifty-one thousand, eight hundred seventy-two".