82770207 has 16 divisors (see below), whose sum is σ = 120031968. Its totient is φ = 50428800.

The previous prime is 82770203. The next prime is 82770209. The reversal of 82770207 is 70207728.

It is a happy number.

It is not a de Polignac number, because 82770207 - 2² = 82770203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82770203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6568 + ... + 14445.

It is an arithmetic number, because the mean of its divisors is an integer number (7501998).

Almost surely, 2^82770207 is an apocalyptic number.

82770207 is a deficient number, since it is larger than the sum of its proper divisors (37261761).

82770207 is a wasteful number, since it uses less digits than its factorization.

82770207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21130.

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 82770207 is about 9097.8133087023. The cubic root of 82770207 is about 435.8041355049.

The spelling of 82770207 in words is "eighty-two million, seven hundred seventy thousand, two hundred seven".