900821612 has 12 divisors (see below), whose sum is σ = 1577555616. Its totient is φ = 450091440.

The previous prime is 900821563. The next prime is 900821629. The reversal of 900821612 is 216128009.

It is a super-2 number, since 2×900821612² = 1622959153292557088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73439 + ... + 84822.

It is an arithmetic number, because the mean of its divisors is an integer number (131462968).

Almost surely, 2^900821612 is an apocalyptic number.

It is an amenable number.

900821612 is a deficient number, since it is larger than the sum of its proper divisors (676734004).

900821612 is a wasteful number, since it uses less digits than its factorization.

900821612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159688 (or 159686 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 900821612 is about 30013.6904095448. The cubic root of 900821612 is about 965.7830943826.

The spelling of 900821612 in words is "nine hundred million, eight hundred twenty-one thousand, six hundred twelve".