616165416 has 24 divisors (see below), whose sum is σ = 1668781530. Its totient is φ = 205388448.

The previous prime is 616165411. The next prime is 616165481. The reversal of 616165416 is 614561616.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 332916516 + 283248900 = 18246^2 + 16830^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (616165411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4278855 + ... + 4278998.

Almost surely, 2^616165416 is an apocalyptic number.

It is an amenable number.

616165416 is an abundant number, since it is smaller than the sum of its proper divisors (1052616114).

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

616165416 is a wasteful number, since it uses less digits than its factorization.

616165416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8557865 (or 8557858 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 616165416 is about 24822.6794685828. The cubic root of 616165416 is about 850.9403277587.

The spelling of 616165416 in words is "six hundred sixteen million, one hundred sixty-five thousand, four hundred sixteen".