66977230 has 32 divisors (see below), whose sum is σ = 124581600. Its totient is φ = 25909632.

The previous prime is 66977221. The next prime is 66977249. The reversal of 66977230 is 3277966.

It is a Smith number, since the sum of its digits (40) 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 in 15 ways as a sum of consecutive naturals, for example, 46156 + ... + 47584.

It is an arithmetic number, because the mean of its divisors is an integer number (3893175).

Almost surely, 2^66977230 is an apocalyptic number.

66977230 is a deficient number, since it is larger than the sum of its proper divisors (57604370).

66977230 is a wasteful number, since it uses less digits than its factorization.

66977230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 66977230 is about 8183.9617545538. The cubic root of 66977230 is about 406.1087941596.

The spelling of 66977230 in words is "sixty-six million, nine hundred seventy-seven thousand, two hundred thirty".