82646474 has 4 divisors (see below), whose sum is σ = 123969714. Its totient is φ = 41323236.

The previous prime is 82646461. The next prime is 82646477. The reversal of 82646474 is 47464628.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53949025 + 28697449 = 7345^2 + 5357^2 .

It is not an unprimeable number, because it can be changed into a prime (82646477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20661617 + ... + 20661620.

Almost surely, 2^82646474 is an apocalyptic number.

82646474 is a deficient number, since it is larger than the sum of its proper divisors (41323240).

82646474 is a wasteful number, since it uses less digits than its factorization.

82646474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41323239.

The product of its digits is 258048, while the sum is 41.

The square root of 82646474 is about 9091.0106148877. The cubic root of 82646474 is about 435.5868663234.

The spelling of 82646474 in words is "eighty-two million, six hundred forty-six thousand, four hundred seventy-four".