671610477 has 4 divisors (see below), whose sum is σ = 895480640. Its totient is φ = 447740316.

The previous prime is 671610469. The next prime is 671610481. The reversal of 671610477 is 774016176.

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 not a de Polignac number, because 671610477 - 2³ = 671610469 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 (671610487) 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, 111935077 + ... + 111935082.

It is an arithmetic number, because the mean of its divisors is an integer number (223870160).

Almost surely, 2^671610477 is an apocalyptic number.

It is an amenable number.

671610477 is a deficient number, since it is larger than the sum of its proper divisors (223870163).

671610477 is a wasteful number, since it uses less digits than its factorization.

671610477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223870162.

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 671610477 is about 25915.4486166070. The cubic root of 671610477 is about 875.7345568316.

The spelling of 671610477 in words is "six hundred seventy-one million, six hundred ten thousand, four hundred seventy-seven".