649364602 has 4 divisors (see below), whose sum is σ = 974046906. Its totient is φ = 324682300.

The previous prime is 649364593. The next prime is 649364609. The reversal of 649364602 is 206463946.

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., 443987041 + 205377561 = 21071^2 + 14331^2 .

It is not an unprimeable number, because it can be changed into a prime (649364609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162341149 + ... + 162341152.

Almost surely, 2^649364602 is an apocalyptic number.

649364602 is a deficient number, since it is larger than the sum of its proper divisors (324682304).

649364602 is a wasteful number, since it uses less digits than its factorization.

649364602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324682303.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 649364602 is about 25482.6333411600. The cubic root of 649364602 is about 865.9567535256.

The spelling of 649364602 in words is "six hundred forty-nine million, three hundred sixty-four thousand, six hundred two".