616463172 has 36 divisors (see below), whose sum is σ = 1678151020. Its totient is φ = 189680832.

The previous prime is 616463171. The next prime is 616463201. The reversal of 616463172 is 271364616.

It is a happy number.

616463172 is a `hidden beast` number, since 6 + 1 + 646 + 3 + 1 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 211004676 + 405458496 = 14526^2 + 20136^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (616463171) 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, 658147 + ... + 659082.

Almost surely, 2^616463172 is an apocalyptic number.

It is an amenable number.

616463172 is an abundant number, since it is smaller than the sum of its proper divisors (1061687848).

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

616463172 is a wasteful number, since it uses less digits than its factorization.

616463172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317252 (or 1317247 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 616463172 is about 24828.6764045126. The cubic root of 616463172 is about 851.0773752567.

The spelling of 616463172 in words is "six hundred sixteen million, four hundred sixty-three thousand, one hundred seventy-two".