715987 has 6 divisors (see below), whose sum is σ = 737268. Its totient is φ = 695304.

The previous prime is 715973. The next prime is 715991. The reversal of 715987 is 789517.

715987 is nontrivially palindromic in base 9.

It is not a de Polignac number, because 715987 - 2⁷ = 715859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

715987 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (715927) 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, 1108 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (122878).

2⁷¹⁵⁹⁸⁷ is an apocalyptic number.

715987 is a deficient number, since it is larger than the sum of its proper divisors (21281).

715987 is an equidigital number, since it uses as much as digits as its factorization.

715987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 560 counting only the distinct ones).

The product of its digits is 17640, while the sum is 37.

The square root of 715987 is about 846.1601503262. The cubic root of 715987 is about 89.4612672200.

The spelling of 715987 in words is "seven hundred fifteen thousand, nine hundred eighty-seven".