666053377 has 4 divisors (see below), whose sum is σ = 726603696. Its totient is φ = 605503060.

The previous prime is 666053357. The next prime is 666053431. The reversal of 666053377 is 773350666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 666053377 - 2¹¹ = 666051329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666053347) 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, 30275143 + ... + 30275164.

It is an arithmetic number, because the mean of its divisors is an integer number (181650924).

Almost surely, 2^666053377 is an apocalyptic number.

It is an amenable number.

666053377 is a deficient number, since it is larger than the sum of its proper divisors (60550319).

666053377 is a wasteful number, since it uses less digits than its factorization.

666053377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60550318.

The product of its (nonzero) digits is 476280, while the sum is 43.

The square root of 666053377 is about 25808.0099387768. The cubic root of 666053377 is about 873.3125036146.

The spelling of 666053377 in words is "six hundred sixty-six million, fifty-three thousand, three hundred seventy-seven".