688295272 has 16 divisors (see below), whose sum is σ = 1474918560. Its totient is φ = 294983664.

The previous prime is 688295233. The next prime is 688295287. The reversal of 688295272 is 272592886.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6145438 + ... + 6145549.

It is an arithmetic number, because the mean of its divisors is an integer number (92182410).

Almost surely, 2^688295272 is an apocalyptic number.

It is an amenable number.

688295272 is an abundant number, since it is smaller than the sum of its proper divisors (786623288).

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

688295272 is a wasteful number, since it uses less digits than its factorization.

688295272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12291000 (or 12290996 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 688295272 is about 26235.3820631604. The cubic root of 688295272 is about 882.9272662932.

The spelling of 688295272 in words is "six hundred eighty-eight million, two hundred ninety-five thousand, two hundred seventy-two".