616134820 has 36 divisors (see below), whose sum is σ = 1505131740. Its totient is φ = 211245888.

The previous prime is 616134803. The next prime is 616134821. The reversal of 616134820 is 28431616.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 223143844 + 392990976 = 14938^2 + 19824^2 .

It is not an unprimeable number, because it can be changed into a prime (616134821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313375 + ... + 315334.

It is an arithmetic number, because the mean of its divisors is an integer number (41809215).

Almost surely, 2^616134820 is an apocalyptic number.

It is an amenable number.

616134820 is an abundant number, since it is smaller than the sum of its proper divisors (888996920).

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

616134820 is a wasteful number, since it uses less digits than its factorization.

616134820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628732 (or 628723 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 616134820 is about 24822.0631696884. The cubic root of 616134820 is about 850.9262429039.

The spelling of 616134820 in words is "six hundred sixteen million, one hundred thirty-four thousand, eight hundred twenty".