616456420 has 12 divisors (see below), whose sum is σ = 1294558524. Its totient is φ = 246582560.

The previous prime is 616456403. The next prime is 616456433. The reversal of 616456420 is 24654616.

It can be written as a sum of positive squares in 2 ways, for example, as 155151936 + 461304484 = 12456^2 + 21478^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15411391 + ... + 15411430.

It is an arithmetic number, because the mean of its divisors is an integer number (107879877).

Almost surely, 2^616456420 is an apocalyptic number.

It is an amenable number.

616456420 is an abundant number, since it is smaller than the sum of its proper divisors (678102104).

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

616456420 is a wasteful number, since it uses less digits than its factorization.

616456420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30822830 (or 30822828 counting only the distinct ones).

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

The square root of 616456420 is about 24828.5404323331. The cubic root of 616456420 is about 851.0742680176.

The spelling of 616456420 in words is "six hundred sixteen million, four hundred fifty-six thousand, four hundred twenty".