66600260 has 12 divisors (see below), whose sum is σ = 139860588. Its totient is φ = 26640096.

The previous prime is 66600241. The next prime is 66600283. The reversal of 66600260 is 6200666.

It can be written as a sum of positive squares in 2 ways, for example, as 31719424 + 34880836 = 5632^2 + 5906^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664987 + ... + 1665026.

It is an arithmetic number, because the mean of its divisors is an integer number (11655049).

Almost surely, 2^66600260 is an apocalyptic number.

It is an amenable number.

66600260 is an abundant number, since it is smaller than the sum of its proper divisors (73260328).

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

66600260 is a wasteful number, since it uses less digits than its factorization.

66600260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330022 (or 3330020 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 66600260 is about 8160.8982348759. The cubic root of 66600260 is about 405.3454553907.

The spelling of 66600260 in words is "sixty-six million, six hundred thousand, two hundred sixty".