64522986 has 32 divisors (see below), whose sum is σ = 142084800. Its totient is φ = 19370880.

The previous prime is 64522967. The next prime is 64522987. The reversal of 64522986 is 68922546.

It is not an unprimeable number, because it can be changed into a prime (64522987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2710 + ... + 11678.

It is an arithmetic number, because the mean of its divisors is an integer number (4440150).

Almost surely, 2^64522986 is an apocalyptic number.

64522986 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64522986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71042400).

64522986 is an abundant number, since it is smaller than the sum of its proper divisors (77561814).

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

64522986 is a wasteful number, since it uses less digits than its factorization.

64522986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9094.

The product of its digits is 207360, while the sum is 42.

The square root of 64522986 is about 8032.6201204837. The cubic root of 64522986 is about 401.0865997463.

The spelling of 64522986 in words is "sixty-four million, five hundred twenty-two thousand, nine hundred eighty-six".