66502274 has 16 divisors (see below), whose sum is σ = 102169728. Its totient is φ = 32449872.

The previous prime is 66502253. The next prime is 66502277. The reversal of 66502274 is 47220566.

It is a self number, because there is not a number n which added to its sum of digits gives 66502274.

It is not an unprimeable number, because it can be changed into a prime (66502277) 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, 40844 + ... + 42440.

It is an arithmetic number, because the mean of its divisors is an integer number (6385608).

Almost surely, 2^66502274 is an apocalyptic number.

66502274 is a deficient number, since it is larger than the sum of its proper divisors (35667454).

66502274 is a wasteful number, since it uses less digits than its factorization.

66502274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 66502274 is about 8154.8926418439. The cubic root of 66502274 is about 405.1465689086.

The spelling of 66502274 in words is "sixty-six million, five hundred two thousand, two hundred seventy-four".