671263626 has 32 divisors (see below), whose sum is σ = 1498641408. Its totient is φ = 198681840.

The previous prime is 671263589. The next prime is 671263627. The reversal of 671263626 is 626362176.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (671263627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115426 + ... + 121101.

It is an arithmetic number, because the mean of its divisors is an integer number (46832544).

Almost surely, 2^671263626 is an apocalyptic number.

671263626 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

671263626 is an abundant number, since it is smaller than the sum of its proper divisors (827377782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671263626 is a wasteful number, since it uses less digits than its factorization.

671263626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236586.

The product of its digits is 108864, while the sum is 39.

The square root of 671263626 is about 25908.7557786938. The cubic root of 671263626 is about 875.5837741372.

The spelling of 671263626 in words is "six hundred seventy-one million, two hundred sixty-three thousand, six hundred twenty-six".