653972990 has 32 divisors (see below), whose sum is σ = 1287122400. Its totient is φ = 237260800.

The previous prime is 653972987. The next prime is 653972999. The reversal of 653972990 is 99279356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653972999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42770 + ... + 56010.

It is an arithmetic number, because the mean of its divisors is an integer number (40222575).

Almost surely, 2^653972990 is an apocalyptic number.

653972990 is a deficient number, since it is larger than the sum of its proper divisors (633149410).

653972990 is a wasteful number, since it uses less digits than its factorization.

653972990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13708.

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 653972990 is about 25572.8956123471. The cubic root of 653972990 is about 868.0004238426. Note that the first 3 decimals are identical.

The spelling of 653972990 in words is "six hundred fifty-three million, nine hundred seventy-two thousand, nine hundred ninety".