66576131 has 8 divisors (see below), whose sum is σ = 71688240. Its totient is φ = 61596928.

The previous prime is 66576121. The next prime is 66576137. The reversal of 66576131 is 13167566.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66576131 - 2¹⁴ = 66559747 is a prime.

It is a super-2 number, since 2×66576131² = 8864762437858322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66576091 and 66576100.

It is not an unprimeable number, because it can be changed into a prime (66576137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32186 + ... + 34191.

It is an arithmetic number, because the mean of its divisors is an integer number (8961030).

Almost surely, 2^66576131 is an apocalyptic number.

66576131 is a deficient number, since it is larger than the sum of its proper divisors (5112109).

66576131 is a wasteful number, since it uses less digits than its factorization.

66576131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66453.

The product of its digits is 22680, while the sum is 35.

The square root of 66576131 is about 8159.4197710376. The cubic root of 66576131 is about 405.2964978146.

The spelling of 66576131 in words is "sixty-six million, five hundred seventy-six thousand, one hundred thirty-one".