715638 has 32 divisors (see below), whose sum is σ = 1785600. Its totient is φ = 185760.

The previous prime is 715621. The next prime is 715639. The reversal of 715638 is 836517.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (55800).

2⁷¹⁵⁶³⁸ is an apocalyptic number.

715638 is an abundant number, since it is smaller than the sum of its proper divisors (1069962).

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

715638 is a wasteful number, since it uses less digits than its factorization.

715638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572.

The product of its digits is 5040, while the sum is 30.

The square root of 715638 is about 845.9538994532. The cubic root of 715638 is about 89.4467292202.

The spelling of 715638 in words is "seven hundred fifteen thousand, six hundred thirty-eight".