89622640 has 40 divisors (see below), whose sum is σ = 220633200. Its totient is φ = 33739776.

The previous prime is 89622607. The next prime is 89622641. The reversal of 89622640 is 4622698.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 89622640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89622641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31590 + ... + 34309.

It is an arithmetic number, because the mean of its divisors is an integer number (5515830).

Almost surely, 2^89622640 is an apocalyptic number.

89622640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89622640 is an abundant number, since it is smaller than the sum of its proper divisors (131010560).

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

89622640 is a wasteful number, since it uses less digits than its factorization.

89622640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65929 (or 65923 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 89622640 is about 9466.9234706952. The cubic root of 89622640 is about 447.5132628218.

The spelling of 89622640 in words is "eighty-nine million, six hundred twenty-two thousand, six hundred forty".