616742145 has 12 divisors (see below), whose sum is σ = 1069019796. Its totient is φ = 328929120.

The previous prime is 616742111. The next prime is 616742153. The reversal of 616742145 is 541247616.

It can be written as a sum of positive squares in 2 ways, for example, as 194686209 + 422055936 = 13953^2 + 20544^2 .

It is not a de Polignac number, because 616742145 - 2⁷ = 616742017 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6852646 + ... + 6852735.

It is an arithmetic number, because the mean of its divisors is an integer number (89084983).

Almost surely, 2^616742145 is an apocalyptic number.

It is an amenable number.

616742145 is a deficient number, since it is larger than the sum of its proper divisors (452277651).

616742145 is a wasteful number, since it uses less digits than its factorization.

616742145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13705392 (or 13705389 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 616742145 is about 24834.2937286326. The cubic root of 616742145 is about 851.2057375085.

The spelling of 616742145 in words is "six hundred sixteen million, seven hundred forty-two thousand, one hundred forty-five".