724761 has 16 divisors (see below), whose sum is σ = 1137600. Its totient is φ = 454464.

The previous prime is 724751. The next prime is 724769. The reversal of 724761 is 167427.

724761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 724761 - 2⁵ = 724729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (724769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331 + ... + 1248.

It is an arithmetic number, because the mean of its divisors is an integer number (71100).

2⁷²⁴⁷⁶¹ is an apocalyptic number.

It is an amenable number.

724761 is a deficient number, since it is larger than the sum of its proper divisors (412839).

724761 is a wasteful number, since it uses less digits than its factorization.

724761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1599 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 724761 is about 851.3289610955. The cubic root of 724761 is about 89.8252163383.

It can be divided in two parts, 724 and 761, that added together give a triangular number (1485 = T₅₄).

The spelling of 724761 in words is "seven hundred twenty-four thousand, seven hundred sixty-one".