649161574 has 8 divisors (see below), whose sum is σ = 973869120. Its totient is φ = 324538536.

The previous prime is 649161563. The next prime is 649161587. The reversal of 649161574 is 475161946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 649161574.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4107 + ... + 36265.

It is an arithmetic number, because the mean of its divisors is an integer number (121733640).

Almost surely, 2^649161574 is an apocalyptic number.

649161574 is a deficient number, since it is larger than the sum of its proper divisors (324707546).

649161574 is a wasteful number, since it uses less digits than its factorization.

649161574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42254.

The product of its digits is 181440, while the sum is 43.

The square root of 649161574 is about 25478.6493755065. The cubic root of 649161574 is about 865.8664951441.

The spelling of 649161574 in words is "six hundred forty-nine million, one hundred sixty-one thousand, five hundred seventy-four".