688225272 has 32 divisors (see below), whose sum is σ = 1966358400. Its totient is φ = 196635744.

The previous prime is 688225267. The next prime is 688225289. The reversal of 688225272 is 272522886.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 2048122 + ... + 2048457.

It is an arithmetic number, because the mean of its divisors is an integer number (61448700).

Almost surely, 2^688225272 is an apocalyptic number.

It is an amenable number.

688225272 is an abundant number, since it is smaller than the sum of its proper divisors (1278133128).

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

688225272 is a wasteful number, since it uses less digits than its factorization.

688225272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096595 (or 4096591 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 688225272 is about 26234.0479529942. The cubic root of 688225272 is about 882.8973338856.

The spelling of 688225272 in words is "six hundred eighty-eight million, two hundred twenty-five thousand, two hundred seventy-two".