82664818 has 4 divisors (see below), whose sum is σ = 123997230. Its totient is φ = 41332408.

The previous prime is 82664807. The next prime is 82664831. The reversal of 82664818 is 81846628.

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., 42810849 + 39853969 = 6543^2 + 6313^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20666203 + ... + 20666206.

Almost surely, 2^82664818 is an apocalyptic number.

82664818 is a deficient number, since it is larger than the sum of its proper divisors (41332412).

82664818 is a wasteful number, since it uses less digits than its factorization.

82664818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41332411.

The product of its digits is 147456, while the sum is 43.

The square root of 82664818 is about 9092.0194676430. The cubic root of 82664818 is about 435.6190911882.

The spelling of 82664818 in words is "eighty-two million, six hundred sixty-four thousand, eight hundred eighteen".