746731 has 4 divisors (see below), whose sum is σ = 748512. Its totient is φ = 744952.

The previous prime is 746723. The next prime is 746737. The reversal of 746731 is 137647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137647 = 59 ⋅2333.

It is a cyclic number.

It is not a de Polignac number, because 746731 - 2³ = 746723 is a prime.

It is a super-2 number, since 2×746731² = 1115214372722, which contains 22 as substring.

It is a Duffinian number.

746731 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 746731.

It is not an unprimeable number, because it can be changed into a prime (746737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126 + ... + 1228.

It is an arithmetic number, because the mean of its divisors is an integer number (187128).

2⁷⁴⁶⁷³¹ is an apocalyptic number.

746731 is a deficient number, since it is larger than the sum of its proper divisors (1781).

746731 is a wasteful number, since it uses less digits than its factorization.

746731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780.

The product of its digits is 3528, while the sum is 28.

The square root of 746731 is about 864.1359846691. The cubic root of 746731 is about 90.7238336732.

The spelling of 746731 in words is "seven hundred forty-six thousand, seven hundred thirty-one".