616552557 has 8 divisors (see below), whose sum is σ = 850417440. Its totient is φ = 396861360.

The previous prime is 616552543. The next prime is 616552591. The reversal of 616552557 is 755255616.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 616552557 - 2⁷ = 616552429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616552357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3543319 + ... + 3543492.

It is an arithmetic number, because the mean of its divisors is an integer number (106302180).

Almost surely, 2^616552557 is an apocalyptic number.

It is an amenable number.

616552557 is a deficient number, since it is larger than the sum of its proper divisors (233864883).

616552557 is a wasteful number, since it uses less digits than its factorization.

616552557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7086843.

The product of its digits is 315000, while the sum is 42.

The square root of 616552557 is about 24830.4763748100. The cubic root of 616552557 is about 851.1185076813.

The spelling of 616552557 in words is "six hundred sixteen million, five hundred fifty-two thousand, five hundred fifty-seven".