671631455 has 16 divisors (see below), whose sum is σ = 900674208. Its totient is φ = 476544000.

The previous prime is 671631431. The next prime is 671631473. The reversal of 671631455 is 554136176.

It is not a de Polignac number, because 671631455 - 2⁸ = 671631199 is a prime.

It is a super-2 number, since 2×671631455² = 902177622690834050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 146666 + ... + 151175.

It is an arithmetic number, because the mean of its divisors is an integer number (56292138).

Almost surely, 2^671631455 is an apocalyptic number.

671631455 is a deficient number, since it is larger than the sum of its proper divisors (229042753).

671631455 is a wasteful number, since it uses less digits than its factorization.

671631455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297898.

The product of its digits is 75600, while the sum is 38.

The square root of 671631455 is about 25915.8533527260. The cubic root of 671631455 is about 875.7436747002.

The spelling of 671631455 in words is "six hundred seventy-one million, six hundred thirty-one thousand, four hundred fifty-five".