612516663 has 12 divisors (see below), whose sum is σ = 965177928. Its totient is φ = 371222160.

The previous prime is 612516649. The next prime is 612516679. The reversal of 612516663 is 366615216.

It is not a de Polignac number, because 612516663 - 2⁶ = 612516599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612516263) 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, 3093420 + ... + 3093617.

It is an arithmetic number, because the mean of its divisors is an integer number (80431494).

Almost surely, 2^612516663 is an apocalyptic number.

612516663 is a deficient number, since it is larger than the sum of its proper divisors (352661265).

612516663 is a wasteful number, since it uses less digits than its factorization.

612516663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6187054 (or 6187051 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 612516663 is about 24749.0739826766. The cubic root of 612516663 is about 849.2573273009.

The spelling of 612516663 in words is "six hundred twelve million, five hundred sixteen thousand, six hundred sixty-three".