649026576 has 135 divisors (see below), whose sum is σ = 2006907357. Its totient is φ = 195655680.

The previous prime is 649026569. The next prime is 649026593. The reversal of 649026576 is 675620946.

The square root of 649026576 is 25476.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 157251600 + 491774976 = 12540^2 + 22176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3362736 + ... + 3362928.

Almost surely, 2^649026576 is an apocalyptic number.

649026576 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

649026576 is the 25476-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649026576

649026576 is an abundant number, since it is smaller than the sum of its proper divisors (1357880781).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649026576 is a wasteful number, since it uses less digits than its factorization.

649026576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The cubic root of 649026576 is about 865.8064698471.

The spelling of 649026576 in words is "six hundred forty-nine million, twenty-six thousand, five hundred seventy-six".