671732627 has 4 divisors (see below), whose sum is σ = 687354360. Its totient is φ = 656110896.

The previous prime is 671732599. The next prime is 671732639. The reversal of 671732627 is 726237176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671732627 - 2⁶ = 671732563 is a prime.

It is a super-2 number, since 2×671732627² = 902449444352642258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671732027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7810802 + ... + 7810887.

It is an arithmetic number, because the mean of its divisors is an integer number (171838590).

Almost surely, 2^671732627 is an apocalyptic number.

671732627 is a deficient number, since it is larger than the sum of its proper divisors (15621733).

671732627 is a wasteful number, since it uses less digits than its factorization.

671732627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15621732.

The product of its digits is 148176, while the sum is 41.

The square root of 671732627 is about 25917.8052118616. The cubic root of 671732627 is about 875.7876453878.

The spelling of 671732627 in words is "six hundred seventy-one million, seven hundred thirty-two thousand, six hundred twenty-seven".