671601567 has 32 divisors (see below), whose sum is σ = 1117670400. Its totient is φ = 349251840.

The previous prime is 671601547. The next prime is 671601583. The reversal of 671601567 is 765106176.

It is not a de Polignac number, because 671601567 - 2¹⁴ = 671585183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671601547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2059 + ... + 36707.

It is an arithmetic number, because the mean of its divisors is an integer number (34927200).

Almost surely, 2^671601567 is an apocalyptic number.

671601567 is a deficient number, since it is larger than the sum of its proper divisors (446068833).

671601567 is a wasteful number, since it uses less digits than its factorization.

671601567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34743.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 671601567 is about 25915.2767108515. The cubic root of 671601567 is about 875.7306841357.

The spelling of 671601567 in words is "six hundred seventy-one million, six hundred one thousand, five hundred sixty-seven".