66792077 has 8 divisors (see below), whose sum is σ = 73268832. Its totient is φ = 60382800.

The previous prime is 66792059. The next prime is 66792079. The reversal of 66792077 is 77029766.

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 66792077 - 2¹⁸ = 66529933 is a prime.

It is a super-2 number, since 2×66792077² = 8922363099947858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66792079) 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, 14783 + ... + 18764.

It is an arithmetic number, because the mean of its divisors is an integer number (9158604).

Almost surely, 2^66792077 is an apocalyptic number.

It is an amenable number.

66792077 is a deficient number, since it is larger than the sum of its proper divisors (6476755).

66792077 is a wasteful number, since it uses less digits than its factorization.

66792077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33739.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 66792077 is about 8172.6419840832. The cubic root of 66792077 is about 405.7342307656.

The spelling of 66792077 in words is "sixty-six million, seven hundred ninety-two thousand, seventy-seven".