64089090 has 192 divisors, whose sum is σ = 200188800. Its totient is φ = 14463360.

The previous prime is 64089083. The next prime is 64089097. The reversal of 64089090 is 9098046.

64089090 is a `hidden beast` number, since 640 + 8 + 9 + 0 + 9 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (64089083) and next prime (64089097).

It is a super-2 number, since 2×64089090² = 8214822914056200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64089097) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2067375 + ... + 2067405.

It is an arithmetic number, because the mean of its divisors is an integer number (1042650).

Almost surely, 2^64089090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64089090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100094400).

64089090 is an abundant number, since it is smaller than the sum of its proper divisors (136099710).

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

64089090 is a wasteful number, since it uses less digits than its factorization.

64089090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 64089090 is about 8005.5661885965. The cubic root of 64089090 is about 400.1855181109.

The spelling of 64089090 in words is "sixty-four million, eighty-nine thousand, ninety".