701631 has 36 divisors (see below), whose sum is σ = 1238952. Its totient is φ = 381024.

The previous prime is 701629. The next prime is 701653. The reversal of 701631 is 136107.

It is not a de Polignac number, because 701631 - 2¹ = 701629 is a prime.

It is a super-2 number, since 2×701631² = 984572120322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (701611) 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 35 ways as a sum of consecutive naturals, for example, 16296 + ... + 16338.

2⁷⁰¹⁶³¹ is an apocalyptic number.

701631 is a deficient number, since it is larger than the sum of its proper divisors (537321).

701631 is a wasteful number, since it uses less digits than its factorization.

701631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 701631 is about 837.6341683575. The cubic root of 701631 is about 88.8593072283.

Adding to 701631 its reverse (136107), we get a palindrome (837738).

The spelling of 701631 in words is "seven hundred one thousand, six hundred thirty-one".