82701945 has 32 divisors (see below), whose sum is σ = 148035840. Its totient is φ = 43804800.

The previous prime is 82701937. The next prime is 82701959. The reversal of 82701945 is 54910728.

It is not a de Polignac number, because 82701945 - 2³ = 82701937 is a prime.

It is a super-2 number, since 2×82701945² = 13679223413566050, which contains 22 as substring.

It is a Curzon 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, 18357 + ... + 22413.

It is an arithmetic number, because the mean of its divisors is an integer number (4626120).

Almost surely, 2^82701945 is an apocalyptic number.

It is an amenable number.

82701945 is a deficient number, since it is larger than the sum of its proper divisors (65333895).

82701945 is a wasteful number, since it uses less digits than its factorization.

82701945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222 (or 4216 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 82701945 is about 9094.0609740643. The cubic root of 82701945 is about 435.6842975227.

The spelling of 82701945 in words is "eighty-two million, seven hundred one thousand, nine hundred forty-five".