66767630 has 8 divisors (see below), whose sum is σ = 120181752. Its totient is φ = 26707048.

The previous prime is 66767629. The next prime is 66767633. The reversal of 66767630 is 3676766.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66767633) 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, 3338372 + ... + 3338391.

It is an arithmetic number, because the mean of its divisors is an integer number (15022719).

Almost surely, 2^66767630 is an apocalyptic number.

66767630 is a deficient number, since it is larger than the sum of its proper divisors (53414122).

66767630 is a wasteful number, since it uses less digits than its factorization.

66767630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6676770.

The product of its (nonzero) digits is 190512, while the sum is 41.

The square root of 66767630 is about 8171.1461864294. The cubic root of 66767630 is about 405.6847229217.

The spelling of 66767630 in words is "sixty-six million, seven hundred sixty-seven thousand, six hundred thirty".