764138055 has 8 divisors (see below), whose sum is σ = 1222620912. Its totient is φ = 407540288.

The previous prime is 764137973. The next prime is 764138077. The reversal of 764138055 is 550831467.

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 764138055 - 2¹¹ = 764136007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25471254 + ... + 25471283.

It is an arithmetic number, because the mean of its divisors is an integer number (152827614).

Almost surely, 2^764138055 is an apocalyptic number.

764138055 is a deficient number, since it is larger than the sum of its proper divisors (458482857).

764138055 is a wasteful number, since it uses less digits than its factorization.

764138055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50942545.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 764138055 is about 27643.0471366671. The cubic root of 764138055 is about 914.2338057223.

The spelling of 764138055 in words is "seven hundred sixty-four million, one hundred thirty-eight thousand, fifty-five".