721374 has 16 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 239000.

The previous prime is 721363. The next prime is 721379. The reversal of 721374 is 473127.

721374 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 721374.

It is not an unprimeable number, because it can be changed into a prime (721379) 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, 1267 + ... + 1745.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2⁷²¹³⁷⁴ is an apocalyptic number.

721374 is an abundant number, since it is smaller than the sum of its proper divisors (730146).

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

721374 is a wasteful number, since it uses less digits than its factorization.

721374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735.

The product of its digits is 1176, while the sum is 24.

The square root of 721374 is about 849.3373887920. The cubic root of 721374 is about 89.6850721297.

The spelling of 721374 in words is "seven hundred twenty-one thousand, three hundred seventy-four", and thus it is an iban number.