66701038 has 4 divisors (see below), whose sum is σ = 100051560. Its totient is φ = 33350518.

The previous prime is 66701027. The next prime is 66701051. The reversal of 66701038 is 83010766.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16675258 + ... + 16675261.

It is an arithmetic number, because the mean of its divisors is an integer number (25012890).

Almost surely, 2^66701038 is an apocalyptic number.

66701038 is a deficient number, since it is larger than the sum of its proper divisors (33350522).

66701038 is a wasteful number, since it uses less digits than its factorization.

66701038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33350521.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 66701038 is about 8167.0703437646. The cubic root of 66701038 is about 405.5498055300.

The spelling of 66701038 in words is "sixty-six million, seven hundred one thousand, thirty-eight".