649175004 has 36 divisors (see below), whose sum is σ = 1650153960. Its totient is φ = 215180640.

The previous prime is 649175003. The next prime is 649175011. The reversal of 649175004 is 400571946.

649175004 is a `hidden beast` number, since 64 + 91 + 7 + 500 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 649175004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649175003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43927 + ... + 56814.

It is an arithmetic number, because the mean of its divisors is an integer number (45837610).

Almost surely, 2^649175004 is an apocalyptic number.

It is an amenable number.

649175004 is an abundant number, since it is smaller than the sum of its proper divisors (1000978956).

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

649175004 is a wasteful number, since it uses less digits than its factorization.

649175004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100930 (or 100925 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 649175004 is about 25478.9129281451. The cubic root of 649175004 is about 865.8724661829.

The spelling of 649175004 in words is "six hundred forty-nine million, one hundred seventy-five thousand, four".