653671404 has 48 divisors (see below), whose sum is σ = 1696464000. Its totient is φ = 217664208.

The previous prime is 653671373. The next prime is 653671411. The reversal of 653671404 is 404176356.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125647 + ... + 130745.

It is an arithmetic number, because the mean of its divisors is an integer number (35343000).

Almost surely, 2^653671404 is an apocalyptic number.

It is an amenable number.

653671404 is an abundant number, since it is smaller than the sum of its proper divisors (1042792596).

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

653671404 is a wasteful number, since it uses less digits than its factorization.

653671404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299 (or 6291 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 653671404 is about 25566.9983377009. The cubic root of 653671404 is about 867.8669743829.

The spelling of 653671404 in words is "six hundred fifty-three million, six hundred seventy-one thousand, four hundred four".