55764669 has 4 divisors (see below), whose sum is σ = 74352896. Its totient is φ = 37176444.

The previous prime is 55764649. The next prime is 55764671. The reversal of 55764669 is 96646755.

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 55764669 - 2²⁰ = 54716093 is a prime.

It is a super-2 number, since 2×55764669² = 6219396617359122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55764649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9294109 + ... + 9294114.

It is an arithmetic number, because the mean of its divisors is an integer number (18588224).

Almost surely, 2^55764669 is an apocalyptic number.

It is an amenable number.

55764669 is a deficient number, since it is larger than the sum of its proper divisors (18588227).

55764669 is a wasteful number, since it uses less digits than its factorization.

55764669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18588226.

The product of its digits is 1360800, while the sum is 48.

The square root of 55764669 is about 7467.5745058218. The cubic root of 55764669 is about 382.0495650350.

The spelling of 55764669 in words is "fifty-five million, seven hundred sixty-four thousand, six hundred sixty-nine".