616204564 has 6 divisors (see below), whose sum is σ = 1078357994. Its totient is φ = 308102280.

The previous prime is 616204541. The next prime is 616204573. The reversal of 616204564 is 465402616.

It can be written as a sum of positive squares in only one way, i.e., 513384964 + 102819600 = 22658^2 + 10140^2 .

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, 77025567 + ... + 77025574.

Almost surely, 2^616204564 is an apocalyptic number.

It is an amenable number.

616204564 is a deficient number, since it is larger than the sum of its proper divisors (462153430).

616204564 is a wasteful number, since it uses less digits than its factorization.

616204564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154051145 (or 154051143 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 616204564 is about 24823.4680091239. The cubic root of 616204564 is about 850.9583488429.

The spelling of 616204564 in words is "six hundred sixteen million, two hundred four thousand, five hundred sixty-four".