671775377 has 16 divisors (see below), whose sum is σ = 829973760. Its totient is φ = 529474752.

The previous prime is 671775347. The next prime is 671775397. The reversal of 671775377 is 773577176.

It is a cyclic number.

It is not a de Polignac number, because 671775377 - 2¹⁴ = 671758993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671775317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9899 + ... + 37967.

It is an arithmetic number, because the mean of its divisors is an integer number (51873360).

Almost surely, 2^671775377 is an apocalyptic number.

It is an amenable number.

671775377 is a deficient number, since it is larger than the sum of its proper divisors (158198383).

671775377 is a wasteful number, since it uses less digits than its factorization.

671775377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28352.

The product of its digits is 1512630, while the sum is 50.

The square root of 671775377 is about 25918.6299213519. The cubic root of 671775377 is about 875.8062237755.

The spelling of 671775377 in words is "six hundred seventy-one million, seven hundred seventy-five thousand, three hundred seventy-seven".