647602082 has 4 divisors (see below), whose sum is σ = 971403126. Its totient is φ = 323801040.

The previous prime is 647602079. The next prime is 647602091. The reversal of 647602082 is 280206746.

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., 530334841 + 117267241 = 23029^2 + 10829^2 .

It is a super-2 number, since 2×647602082² = 838776913221469448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161900519 + ... + 161900522.

Almost surely, 2^647602082 is an apocalyptic number.

647602082 is a deficient number, since it is larger than the sum of its proper divisors (323801044).

647602082 is a wasteful number, since it uses less digits than its factorization.

647602082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323801043.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 647602082 is about 25448.0270748048. The cubic root of 647602082 is about 865.1725771919.

The spelling of 647602082 in words is "six hundred forty-seven million, six hundred two thousand, eighty-two".