66396374 has 16 divisors (see below), whose sum is σ = 114367680. Its totient is φ = 28591560.

The previous prime is 66396371. The next prime is 66396391. The reversal of 66396374 is 47369366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66396371) 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, 79004 + ... + 79839.

It is an arithmetic number, because the mean of its divisors is an integer number (7147980).

Almost surely, 2^66396374 is an apocalyptic number.

66396374 is a deficient number, since it is larger than the sum of its proper divisors (47971306).

66396374 is a wasteful number, since it uses less digits than its factorization.

66396374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158875.

The product of its digits is 489888, while the sum is 44.

The square root of 66396374 is about 8148.3970202734. The cubic root of 66396374 is about 404.9313992429.

The spelling of 66396374 in words is "sixty-six million, three hundred ninety-six thousand, three hundred seventy-four".