76621900 has 36 divisors (see below), whose sum is σ = 167567400. Its totient is φ = 30409600.

The previous prime is 76621879. The next prime is 76621913. The reversal of 76621900 is 912667.

It is a super-2 number, since 2×76621900² = 11741831119220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10176 + ... + 16024.

It is an arithmetic number, because the mean of its divisors is an integer number (4654650).

Almost surely, 2^76621900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76621900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83783700).

76621900 is an abundant number, since it is smaller than the sum of its proper divisors (90945500).

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

76621900 is a wasteful number, since it uses less digits than its factorization.

76621900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994 (or 5987 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 76621900 is about 8753.3936276167. The cubic root of 76621900 is about 424.7345978498.

The spelling of 76621900 in words is "seventy-six million, six hundred twenty-one thousand, nine hundred".