99622620 has 72 divisors (see below), whose sum is σ = 309582000. Its totient is φ = 25916160.

The previous prime is 99622583. The next prime is 99622631. The reversal of 99622620 is 2622699.

99622620 is a `hidden beast` number, since 9 + 9 + 6 + 22 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 631 + ... + 14129.

It is an arithmetic number, because the mean of its divisors is an integer number (4299750).

Almost surely, 2^99622620 is an apocalyptic number.

99622620 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99622620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154791000).

99622620 is an abundant number, since it is smaller than the sum of its proper divisors (209959380).

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

99622620 is a wasteful number, since it uses less digits than its factorization.

99622620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13555 (or 13550 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 99622620 is about 9981.1131643720. The cubic root of 99622620 is about 463.5742664029.

The spelling of 99622620 in words is "ninety-nine million, six hundred twenty-two thousand, six hundred twenty".