66740774 has 8 divisors (see below), whose sum is σ = 103563360. Its totient is φ = 32219656.

The previous prime is 66740767. The next prime is 66740797. The reversal of 66740774 is 47704766.

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

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, 575294 + ... + 575409.

It is an arithmetic number, because the mean of its divisors is an integer number (12945420).

Almost surely, 2^66740774 is an apocalyptic number.

66740774 is a deficient number, since it is larger than the sum of its proper divisors (36822586).

66740774 is a wasteful number, since it uses less digits than its factorization.

66740774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150734.

The product of its (nonzero) digits is 197568, while the sum is 41.

The square root of 66740774 is about 8169.5026776420. The cubic root of 66740774 is about 405.6303226581.

The spelling of 66740774 in words is "sixty-six million, seven hundred forty thousand, seven hundred seventy-four".