66860374 has 8 divisors (see below), whose sum is σ = 114617808. Its totient is φ = 28654440.

The previous prime is 66860359. The next prime is 66860377. The reversal of 66860374 is 47306866.

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

It is a super-2 number, since 2×66860374² = 8940619222839752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66860377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2387857 + ... + 2387884.

It is an arithmetic number, because the mean of its divisors is an integer number (14327226).

Almost surely, 2^66860374 is an apocalyptic number.

66860374 is a deficient number, since it is larger than the sum of its proper divisors (47757434).

66860374 is a wasteful number, since it uses less digits than its factorization.

66860374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775750.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 66860374 is about 8176.8193082641. The cubic root of 66860374 is about 405.8724756615.

The spelling of 66860374 in words is "sixty-six million, eight hundred sixty thousand, three hundred seventy-four".