900605720 has 32 divisors (see below), whose sum is σ = 2315844000. Its totient is φ = 308779008.

The previous prime is 900605711. The next prime is 900605731. The reversal of 900605720 is 27506009.

900605720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×900605720² = 1622181325793436800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1607945 + ... + 1608504.

It is an arithmetic number, because the mean of its divisors is an integer number (72370125).

Almost surely, 2^900605720 is an apocalyptic number.

It is an amenable number.

900605720 is an abundant number, since it is smaller than the sum of its proper divisors (1415238280).

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

900605720 is a wasteful number, since it uses less digits than its factorization.

900605720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216467 (or 3216463 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 900605720 is about 30010.0936353088. The cubic root of 900605720 is about 965.7059346356.

The spelling of 900605720 in words is "nine hundred million, six hundred five thousand, seven hundred twenty".