764776461 has 4 divisors (see below), whose sum is σ = 1019701952. Its totient is φ = 509850972.

The previous prime is 764776423. The next prime is 764776469. The reversal of 764776461 is 164677467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 764776461 - 2¹⁰ = 764775437 is a prime.

It is a super-3 number, since 3×764776461³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 764776461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764776469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127462741 + ... + 127462746.

It is an arithmetic number, because the mean of its divisors is an integer number (254925488).

Almost surely, 2^764776461 is an apocalyptic number.

It is an amenable number.

764776461 is a deficient number, since it is larger than the sum of its proper divisors (254925491).

764776461 is a wasteful number, since it uses less digits than its factorization.

764776461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254925490.

The product of its digits is 1185408, while the sum is 48.

The square root of 764776461 is about 27654.5920418291. The cubic root of 764776461 is about 914.4883364664.

The spelling of 764776461 in words is "seven hundred sixty-four million, seven hundred seventy-six thousand, four hundred sixty-one".