655626772 has 6 divisors (see below), whose sum is σ = 1147346858. Its totient is φ = 327813384.

The previous prime is 655626739. The next prime is 655626857. The reversal of 655626772 is 277626556.

It can be written as a sum of positive squares in only one way, i.e., 545502736 + 110124036 = 23356^2 + 10494^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81953343 + ... + 81953350.

Almost surely, 2^655626772 is an apocalyptic number.

It is an amenable number.

655626772 is a deficient number, since it is larger than the sum of its proper divisors (491720086).

655626772 is a wasteful number, since it uses less digits than its factorization.

655626772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163906697 (or 163906695 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 46.

The square root of 655626772 is about 25605.2098604952. The cubic root of 655626772 is about 868.7314811228.

The spelling of 655626772 in words is "six hundred fifty-five million, six hundred twenty-six thousand, seven hundred seventy-two".