66794265 has 24 divisors (see below), whose sum is σ = 118472640. Its totient is φ = 34794144.

The previous prime is 66794251. The next prime is 66794267. The reversal of 66794265 is 56249766.

It is not a de Polignac number, because 66794265 - 2⁸ = 66794009 is a prime.

It is a super-2 number, since 2×66794265² = 8922947673780450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 66794265.

It is not an unprimeable number, because it can be changed into a prime (66794267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15325 + ... + 19194.

It is an arithmetic number, because the mean of its divisors is an integer number (4936360).

Almost surely, 2^66794265 is an apocalyptic number.

It is an amenable number.

66794265 is a deficient number, since it is larger than the sum of its proper divisors (51678375).

66794265 is a wasteful number, since it uses less digits than its factorization.

66794265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34573 (or 34570 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 66794265 is about 8172.7758442282. The cubic root of 66794265 is about 405.7386611154.

The spelling of 66794265 in words is "sixty-six million, seven hundred ninety-four thousand, two hundred sixty-five".