66376406 has 4 divisors (see below), whose sum is σ = 99564612. Its totient is φ = 33188202.

The previous prime is 66376399. The next prime is 66376411. The reversal of 66376406 is 60467366.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66376406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16594100 + ... + 16594103.

It is an arithmetic number, because the mean of its divisors is an integer number (24891153).

Almost surely, 2^66376406 is an apocalyptic number.

66376406 is a deficient number, since it is larger than the sum of its proper divisors (33188206).

66376406 is a wasteful number, since it uses less digits than its factorization.

66376406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33188205.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 66376406 is about 8147.1716564707. The cubic root of 66376406 is about 404.8908022425.

The spelling of 66376406 in words is "sixty-six million, three hundred seventy-six thousand, four hundred six".