731864 has 24 divisors (see below), whose sum is σ = 1597140. Its totient is φ = 313488.

The previous prime is 731851. The next prime is 731869. The reversal of 731864 is 468137.

731864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 731864.

It is not an unprimeable number, because it can be changed into a prime (731869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 542 + ... + 1325.

2⁷³¹⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

731864 is an abundant number, since it is smaller than the sum of its proper divisors (865276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731864 is a wasteful number, since it uses less digits than its factorization.

731864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887 (or 1876 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 731864 is about 855.4905025773. The cubic root of 731864 is about 90.1177060739.

The spelling of 731864 in words is "seven hundred thirty-one thousand, eight hundred sixty-four".