814664655 has 64 divisors (see below), whose sum is σ = 1708646400. Its totient is φ = 360391680.

The previous prime is 814664651. The next prime is 814664657. The reversal of 814664655 is 556466418.

It is not a de Polignac number, because 814664655 - 2² = 814664651 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 814664655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814664651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15391 + ... + 43199.

It is an arithmetic number, because the mean of its divisors is an integer number (26697600).

Almost surely, 2^814664655 is an apocalyptic number.

814664655 is an abundant number, since it is smaller than the sum of its proper divisors (893981745).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

814664655 is a wasteful number, since it uses less digits than its factorization.

814664655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27861 (or 27855 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 814664655 is about 28542.3309314429. The cubic root of 814664655 is about 933.9557311881.

The spelling of 814664655 in words is "eight hundred fourteen million, six hundred sixty-four thousand, six hundred fifty-five".