64911066 has 32 divisors (see below), whose sum is σ = 149957568. Its totient is φ = 18512640.

The previous prime is 64911023. The next prime is 64911079. The reversal of 64911066 is 66011946.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27805 + ... + 30048.

It is an arithmetic number, because the mean of its divisors is an integer number (4686174).

Almost surely, 2^64911066 is an apocalyptic number.

64911066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64911066 is an abundant number, since it is smaller than the sum of its proper divisors (85046502).

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

64911066 is a wasteful number, since it uses less digits than its factorization.

64911066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57886.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 64911066 is about 8056.7404078821. The cubic root of 64911066 is about 401.8891182022.

It can be divided in two parts, 6491 and 1066, that added together give a palindrome (7557).

The spelling of 64911066 in words is "sixty-four million, nine hundred eleven thousand, sixty-six".