764657061 has 8 divisors (see below), whose sum is σ = 1165191744. Its totient is φ = 436946880.

The previous prime is 764657041. The next prime is 764657099. The reversal of 764657061 is 160756467.

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

It is not a de Polignac number, because 764657061 - 2¹⁹ = 764132773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764657041) 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, 18206100 + ... + 18206141.

It is an arithmetic number, because the mean of its divisors is an integer number (145648968).

Almost surely, 2^764657061 is an apocalyptic number.

It is an amenable number.

764657061 is a deficient number, since it is larger than the sum of its proper divisors (400534683).

764657061 is a wasteful number, since it uses less digits than its factorization.

764657061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36412251.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 764657061 is about 27652.4331840798. The cubic root of 764657061 is about 914.4407427812.

The spelling of 764657061 in words is "seven hundred sixty-four million, six hundred fifty-seven thousand, sixty-one".