66560466 has 32 divisors (see below), whose sum is σ = 155852928. Its totient is φ = 18552960.

The previous prime is 66560449. The next prime is 66560467. The reversal of 66560466 is 66406566.

It is not an unprimeable number, because it can be changed into a prime (66560467) 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, 17605 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (4870404).

Almost surely, 2^66560466 is an apocalyptic number.

66560466 is an abundant number, since it is smaller than the sum of its proper divisors (89292462).

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

66560466 is a wasteful number, since it uses less digits than its factorization.

66560466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38706.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 66560466 is about 8158.4597811106. The cubic root of 66560466 is about 405.2647073037.

The spelling of 66560466 in words is "sixty-six million, five hundred sixty thousand, four hundred sixty-six".