66797151 has 8 divisors (see below), whose sum is σ = 89170224. Its totient is φ = 44477760.

The previous prime is 66797069. The next prime is 66797177. The reversal of 66797151 is 15179766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66797151 - 2⁷ = 66797023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66797051) 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, 10420 + ... + 15561.

It is an arithmetic number, because the mean of its divisors is an integer number (11146278).

Almost surely, 2^66797151 is an apocalyptic number.

66797151 is a deficient number, since it is larger than the sum of its proper divisors (22373073).

66797151 is a wasteful number, since it uses less digits than its factorization.

66797151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26841.

The product of its digits is 79380, while the sum is 42.

The square root of 66797151 is about 8172.9524041193. The cubic root of 66797151 is about 405.7445046556.

The spelling of 66797151 in words is "sixty-six million, seven hundred ninety-seven thousand, one hundred fifty-one".