649031004 has 72 divisors (see below), whose sum is σ = 1725639552. Its totient is φ = 205395840.

The previous prime is 649031003. The next prime is 649031063. The reversal of 649031004 is 400130946.

649031004 is a `hidden beast` number, since 649 + 0 + 3 + 10 + 0 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649031003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53662 + ... + 64634.

It is an arithmetic number, because the mean of its divisors is an integer number (23967216).

Almost surely, 2^649031004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649031004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (862819776).

649031004 is an abundant number, since it is smaller than the sum of its proper divisors (1076608548).

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

649031004 is a wasteful number, since it uses less digits than its factorization.

649031004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11067 (or 11062 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 649031004 is about 25476.0869051744. The cubic root of 649031004 is about 865.8084388380.

The spelling of 649031004 in words is "six hundred forty-nine million, thirty-one thousand, four".