715881 has 4 divisors (see below), whose sum is σ = 954512. Its totient is φ = 477252.

The previous prime is 715879. The next prime is 715889. The reversal of 715881 is 188517.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 715881 - 2¹ = 715879 is a prime.

It is a super-2 number, since 2×715881² = 1024971212322, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (715889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119311 + ... + 119316.

It is an arithmetic number, because the mean of its divisors is an integer number (238628).

2⁷¹⁵⁸⁸¹ is an apocalyptic number.

It is an amenable number.

715881 is a deficient number, since it is larger than the sum of its proper divisors (238631).

715881 is a wasteful number, since it uses less digits than its factorization.

715881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238630.

The product of its digits is 2240, while the sum is 30.

The square root of 715881 is about 846.0975121107. The cubic root of 715881 is about 89.4568521667.

It can be divided in two parts, 715 and 881, that added together give a triangular number (1596 = T₅₆).

The spelling of 715881 in words is "seven hundred fifteen thousand, eight hundred eighty-one".