66115676 has 12 divisors (see below), whose sum is σ = 126220920. Its totient is φ = 30052560.

The previous prime is 66115663. The next prime is 66115681. The reversal of 66115676 is 67651166.

66115676 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66115676² = 8742565225873952, which contains 22 as substring.

66115676 is strictly pandigital in base 9.

It is a congruent number.

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, 751271 + ... + 751358.

It is an arithmetic number, because the mean of its divisors is an integer number (10518410).

Almost surely, 2^66115676 is an apocalyptic number.

It is an amenable number.

66115676 is a deficient number, since it is larger than the sum of its proper divisors (60105244).

66115676 is a wasteful number, since it uses less digits than its factorization.

66115676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502644 (or 1502642 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 66115676 is about 8131.1546535532. The cubic root of 66115676 is about 404.3599624851.

The spelling of 66115676 in words is "sixty-six million, one hundred fifteen thousand, six hundred seventy-six".