616965572 has 6 divisors (see below), whose sum is σ = 1079689758. Its totient is φ = 308482784.

The previous prime is 616965563. The next prime is 616965599. The reversal of 616965572 is 275569616.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 544102276 + 72863296 = 23326^2 + 8536^2 .

It is a super-3 number, since 3×616965572³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77120693 + ... + 77120700.

It is an arithmetic number, because the mean of its divisors is an integer number (179948293).

Almost surely, 2^616965572 is an apocalyptic number.

It is an amenable number.

616965572 is a deficient number, since it is larger than the sum of its proper divisors (462724186).

616965572 is a wasteful number, since it uses less digits than its factorization.

616965572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154241397 (or 154241395 counting only the distinct ones).

The product of its digits is 680400, while the sum is 47.

The square root of 616965572 is about 24838.7916775354. The cubic root of 616965572 is about 851.3085137847.

The spelling of 616965572 in words is "six hundred sixteen million, nine hundred sixty-five thousand, five hundred seventy-two".