66526964 has 12 divisors (see below), whose sum is σ = 133053984. Its totient is φ = 28511544.

The previous prime is 66526963. The next prime is 66526991. The reversal of 66526964 is 46962566.

66526964 is an admirable number.

It is a super-4 number, since 4×66526964⁴ (a number of 32 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66526963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187954 + ... + 1188009.

It is an arithmetic number, because the mean of its divisors is an integer number (11087832).

Almost surely, 2^66526964 is an apocalyptic number.

It is an amenable number.

66526964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66526964 is a wasteful number, since it uses less digits than its factorization.

66526964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375974 (or 2375972 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 66526964 is about 8156.4063165097. The cubic root of 66526964 is about 405.1967016860.

The spelling of 66526964 in words is "sixty-six million, five hundred twenty-six thousand, nine hundred sixty-four".