656735616 has 48 divisors (see below), whose sum is σ = 1889828460. Its totient is φ = 218911488.

The previous prime is 656735593. The next prime is 656735623. The reversal of 656735616 is 616537656.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283890 + ... + 286193.

Almost surely, 2^656735616 is an apocalyptic number.

It is an amenable number.

656735616 is an abundant number, since it is smaller than the sum of its proper divisors (1233092844).

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

656735616 is a wasteful number, since it uses less digits than its factorization.

656735616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570103 (or 570088 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 656735616 is about 25626.8534158995. The cubic root of 656735616 is about 869.2209593749.

It can be divided in two parts, 65673 and 5616, that added together give a square (71289 = 267²).

The spelling of 656735616 in words is "six hundred fifty-six million, seven hundred thirty-five thousand, six hundred sixteen".