649026574 has 16 divisors (see below), whose sum is σ = 1122465888. Its totient is φ = 275692032.

The previous prime is 649026569. The next prime is 649026593. The reversal of 649026574 is 475620946.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 649026574.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203547 + ... + 206710.

It is an arithmetic number, because the mean of its divisors is an integer number (70154118).

Almost surely, 2^649026574 is an apocalyptic number.

649026574 is a deficient number, since it is larger than the sum of its proper divisors (473439314).

649026574 is a wasteful number, since it uses less digits than its factorization.

649026574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410379.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 649026574 is about 25475.9999607474. Note that the first 4 decimals coincide. The cubic root of 649026574 is about 865.8064689578.

The spelling of 649026574 in words is "six hundred forty-nine million, twenty-six thousand, five hundred seventy-four".