66976795 has 8 divisors (see below), whose sum is σ = 81084096. Its totient is φ = 53106816.

The previous prime is 66976769. The next prime is 66976799. The reversal of 66976795 is 59767966.

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 66976795 - 2²¹ = 64879643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66976799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58707 + ... + 59836.

It is an arithmetic number, because the mean of its divisors is an integer number (10135512).

Almost surely, 2^66976795 is an apocalyptic number.

66976795 is a deficient number, since it is larger than the sum of its proper divisors (14107301).

66976795 is a wasteful number, since it uses less digits than its factorization.

66976795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118661.

The product of its digits is 4286520, while the sum is 55.

The square root of 66976795 is about 8183.9351781402. The cubic root of 66976795 is about 406.1079149667.

The spelling of 66976795 in words is "sixty-six million, nine hundred seventy-six thousand, seven hundred ninety-five".