900505620 has 96 divisors (see below), whose sum is σ = 3201811200. Its totient is φ = 205828992.

The previous prime is 900505603. The next prime is 900505621. The reversal of 900505620 is 26505009.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900505621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115335 + ... + 122894.

It is an arithmetic number, because the mean of its divisors is an integer number (33352200).

Almost surely, 2^900505620 is an apocalyptic number.

900505620 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

900505620 is an abundant number, since it is smaller than the sum of its proper divisors (2301305580).

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

900505620 is a wasteful number, since it uses less digits than its factorization.

900505620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238254 (or 238246 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 900505620 is about 30008.4258167602. The cubic root of 900505620 is about 965.6701547364.

The spelling of 900505620 in words is "nine hundred million, five hundred five thousand, six hundred twenty".