749631 has 8 divisors (see below), whose sum is σ = 1012480. Its totient is φ = 493272.

The previous prime is 749587. The next prime is 749641. The reversal of 749631 is 136947.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 749631 - 2¹¹ = 747583 is a prime.

It is a super-2 number, since 2×749631² = 1123893272322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 749631.

It is not an unprimeable number, because it can be changed into a prime (749641) 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, 1345 + ... + 1818.

It is an arithmetic number, because the mean of its divisors is an integer number (126560).

2⁷⁴⁹⁶³¹ is an apocalyptic number.

749631 is a deficient number, since it is larger than the sum of its proper divisors (262849).

749631 is a wasteful number, since it uses less digits than its factorization.

749631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245.

The product of its digits is 4536, while the sum is 30.

The square root of 749631 is about 865.8123353245. The cubic root of 749631 is about 90.8411268084.

The spelling of 749631 in words is "seven hundred forty-nine thousand, six hundred thirty-one".