649425024 has 96 divisors (see below), whose sum is σ = 1978776540. Its totient is φ = 203735040.

The previous prime is 649425011. The next prime is 649425031. The reversal of 649425024 is 420524946.

649425024 is a `hidden beast` number, since 64 + 94 + 2 + 502 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 536385600 + 113039424 = 23160^2 + 10632^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 649425024.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3004 + ... + 36164.

Almost surely, 2^649425024 is an apocalyptic number.

649425024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649425024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989388270).

649425024 is an abundant number, since it is smaller than the sum of its proper divisors (1329351516).

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

649425024 is a wasteful number, since it uses less digits than its factorization.

649425024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33198 (or 33183 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 649425024 is about 25483.8188660962. The cubic root of 649425024 is about 865.9836111728.

The spelling of 649425024 in words is "six hundred forty-nine million, four hundred twenty-five thousand, twenty-four".