671537254 has 16 divisors (see below), whose sum is σ = 1063280880. Its totient is φ = 318090096.

The previous prime is 671537231. The next prime is 671537257. The reversal of 671537254 is 452735176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671537257) 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, 10759 + ... + 38194.

It is an arithmetic number, because the mean of its divisors is an integer number (66455055).

Almost surely, 2^671537254 is an apocalyptic number.

671537254 is a deficient number, since it is larger than the sum of its proper divisors (391743626).

671537254 is an equidigital number, since it uses as much as digits as its factorization.

671537254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49012 (or 48974 counting only the distinct ones).

The product of its digits is 176400, while the sum is 40.

The square root of 671537254 is about 25914.0358493230. The cubic root of 671537254 is about 875.7027297313.

The spelling of 671537254 in words is "six hundred seventy-one million, five hundred thirty-seven thousand, two hundred fifty-four".