66369790 has 8 divisors (see below), whose sum is σ = 119465640. Its totient is φ = 26547912.

The previous prime is 66369767. The next prime is 66369829. The reversal of 66369790 is 9796366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66369790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3318480 + ... + 3318499.

It is an arithmetic number, because the mean of its divisors is an integer number (14933205).

Almost surely, 2^66369790 is an apocalyptic number.

66369790 is a deficient number, since it is larger than the sum of its proper divisors (53095850).

66369790 is a wasteful number, since it uses less digits than its factorization.

66369790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636986.

The product of its (nonzero) digits is 367416, while the sum is 46.

The square root of 66369790 is about 8146.7656158748. The cubic root of 66369790 is about 404.8773494374.

The spelling of 66369790 in words is "sixty-six million, three hundred sixty-nine thousand, seven hundred ninety".