666536676 has 36 divisors (see below), whose sum is σ = 1684094832. Its totient is φ = 205087584.

The previous prime is 666536671. The next prime is 666536677. The reversal of 666536676 is 676635666.

It is a super-2 number, since 2×666536676² = 888542280906257952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (666536671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162306 + ... + 166361.

It is an arithmetic number, because the mean of its divisors is an integer number (46780412).

Almost surely, 2^666536676 is an apocalyptic number.

It is an amenable number.

666536676 is an abundant number, since it is smaller than the sum of its proper divisors (1017558156).

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

666536676 is a wasteful number, since it uses less digits than its factorization.

666536676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328700 (or 328685 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 51.

The square root of 666536676 is about 25817.3715935608. The cubic root of 666536676 is about 873.5236823921.

The spelling of 666536676 in words is "six hundred sixty-six million, five hundred thirty-six thousand, six hundred seventy-six".