612764491 has 8 divisors (see below), whose sum is σ = 628596144. Its totient is φ = 597004800.

The previous prime is 612764483. The next prime is 612764531. The reversal of 612764491 is 194467216.

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

It is a cyclic number.

It is not a de Polignac number, because 612764491 - 2³ = 612764483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612764401) 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, 526 + ... + 35011.

It is an arithmetic number, because the mean of its divisors is an integer number (78574518).

Almost surely, 2^612764491 is an apocalyptic number.

612764491 is a deficient number, since it is larger than the sum of its proper divisors (15831653).

612764491 is a wasteful number, since it uses less digits than its factorization.

612764491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35981.

The product of its digits is 72576, while the sum is 40.

The square root of 612764491 is about 24754.0802899239. The cubic root of 612764491 is about 849.3718500985.

The spelling of 612764491 in words is "six hundred twelve million, seven hundred sixty-four thousand, four hundred ninety-one".