671767477 has 8 divisors (see below), whose sum is σ = 711214560. Its totient is φ = 632729520.

The previous prime is 671767471. The next prime is 671767483. The reversal of 671767477 is 774767176.

It is an interprime number because it is at equal distance from previous prime (671767471) and next prime (671767483).

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 671767477 - 2³ = 671767469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671767471) 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, 98899 + ... + 105472.

It is an arithmetic number, because the mean of its divisors is an integer number (88901820).

Almost surely, 2^671767477 is an apocalyptic number.

It is an amenable number.

671767477 is a deficient number, since it is larger than the sum of its proper divisors (39447083).

671767477 is a wasteful number, since it uses less digits than its factorization.

671767477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204563.

The product of its digits is 2420208, while the sum is 52.

The square root of 671767477 is about 25918.4775208730. The cubic root of 671767477 is about 875.8027906358.

The spelling of 671767477 in words is "six hundred seventy-one million, seven hundred sixty-seven thousand, four hundred seventy-seven".