82920655 has 32 divisors (see below), whose sum is σ = 109368000. Its totient is φ = 60134400.

The previous prime is 82920647. The next prime is 82920659. The reversal of 82920655 is 55602928.

It is a happy number.

It is not a de Polignac number, because 82920655 - 2³ = 82920647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82920659) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237421 + ... + 237769.

It is an arithmetic number, because the mean of its divisors is an integer number (3417750).

Almost surely, 2^82920655 is an apocalyptic number.

82920655 is a deficient number, since it is larger than the sum of its proper divisors (26447345).

82920655 is a wasteful number, since it uses less digits than its factorization.

82920655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 82920655 is about 9106.0779153267. The cubic root of 82920655 is about 436.0680234326.

The spelling of 82920655 in words is "eighty-two million, nine hundred twenty thousand, six hundred fifty-five".