66794266 has 16 divisors (see below), whose sum is σ = 124914240. Its totient is φ = 26023680.

The previous prime is 66794251. The next prime is 66794267. The reversal of 66794266 is 66249766.

It is a super-2 number, since 2×66794266² = 8922947940957512, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 216711 + ... + 217018.

It is an arithmetic number, because the mean of its divisors is an integer number (7807140).

Almost surely, 2^66794266 is an apocalyptic number.

66794266 is a deficient number, since it is larger than the sum of its proper divisors (58119974).

66794266 is a wasteful number, since it uses less digits than its factorization.

66794266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433749.

The product of its digits is 653184, while the sum is 46.

The square root of 66794266 is about 8172.7759054069. The cubic root of 66794266 is about 405.7386631402.

The spelling of 66794266 in words is "sixty-six million, seven hundred ninety-four thousand, two hundred sixty-six".