66772357 has 8 divisors (see below), whose sum is σ = 69057792. Its totient is φ = 64495200.

The previous prime is 66772337. The next prime is 66772367. The reversal of 66772357 is 75327766.

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 66772357 - 2⁷ = 66772229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66772337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17382 + ... + 20872.

It is an arithmetic number, because the mean of its divisors is an integer number (8632224).

Almost surely, 2^66772357 is an apocalyptic number.

It is an amenable number.

66772357 is a deficient number, since it is larger than the sum of its proper divisors (2285435).

66772357 is a wasteful number, since it uses less digits than its factorization.

66772357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139.

The product of its digits is 370440, while the sum is 43.

The square root of 66772357 is about 8171.4354308163. The cubic root of 66772357 is about 405.6942965551.

The spelling of 66772357 in words is "sixty-six million, seven hundred seventy-two thousand, three hundred fifty-seven".