80812655 has 32 divisors (see below), whose sum is σ = 122480640. Its totient is φ = 49720320.

The previous prime is 80812637. The next prime is 80812661. The reversal of 80812655 is 55621808.

It is a happy number.

It is not a de Polignac number, because 80812655 - 2⁶ = 80812591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29087 + ... + 31743.

It is an arithmetic number, because the mean of its divisors is an integer number (3827520).

Almost surely, 2^80812655 is an apocalyptic number.

80812655 is a deficient number, since it is larger than the sum of its proper divisors (41667985).

80812655 is a wasteful number, since it uses less digits than its factorization.

80812655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 80812655 is about 8989.5859192735. The cubic root of 80812655 is about 432.3410355024.

The spelling of 80812655 in words is "eighty million, eight hundred twelve thousand, six hundred fifty-five".