66794650 has 24 divisors (see below), whose sum is σ = 133796124. Its totient is φ = 24662400.

The previous prime is 66794647. The next prime is 66794659. The reversal of 66794650 is 5649766.

It can be written as a sum of positive squares in 6 ways, for example, as 33143049 + 33651601 = 5757^2 + 5801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66794597 and 66794606.

It is not an unprimeable number, because it can be changed into a prime (66794659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50731 + ... + 52030.

Almost surely, 2^66794650 is an apocalyptic number.

66794650 is an abundant number, since it is smaller than the sum of its proper divisors (67001474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66794650 is a wasteful number, since it uses less digits than its factorization.

66794650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102786 (or 102781 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 66794650 is about 8172.7993980031. The cubic root of 66794650 is about 405.7394406688.

The spelling of 66794650 in words is "sixty-six million, seven hundred ninety-four thousand, six hundred fifty".