616712511 has 4 divisors (see below), whose sum is σ = 822283352. Its totient is φ = 411141672.

The previous prime is 616712483. The next prime is 616712513. The reversal of 616712511 is 115217616.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 616712511 - 2¹⁴ = 616696127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616712513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102785416 + ... + 102785421.

It is an arithmetic number, because the mean of its divisors is an integer number (205570838).

Almost surely, 2^616712511 is an apocalyptic number.

616712511 is a deficient number, since it is larger than the sum of its proper divisors (205570841).

616712511 is a wasteful number, since it uses less digits than its factorization.

616712511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205570840.

The product of its digits is 2520, while the sum is 30.

The square root of 616712511 is about 24833.6970868214. The cubic root of 616712511 is about 851.1921040232.

The spelling of 616712511 in words is "six hundred sixteen million, seven hundred twelve thousand, five hundred eleven".