66190377 has 8 divisors (see below), whose sum is σ = 96276960. Its totient is φ = 40115360.

The previous prime is 66190361. The next prime is 66190381. The reversal of 66190377 is 77309166.

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

It is a cyclic number.

It is not a de Polignac number, because 66190377 - 2⁴ = 66190361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66190337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002852 + ... + 1002917.

It is an arithmetic number, because the mean of its divisors is an integer number (12034620).

Almost surely, 2^66190377 is an apocalyptic number.

It is an amenable number.

66190377 is a deficient number, since it is larger than the sum of its proper divisors (30086583).

66190377 is a wasteful number, since it uses less digits than its factorization.

66190377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005783.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 66190377 is about 8135.7468618437. The cubic root of 66190377 is about 404.5121942823.

The spelling of 66190377 in words is "sixty-six million, one hundred ninety thousand, three hundred seventy-seven".