715945 has 12 divisors (see below), whose sum is σ = 893700. Its totient is φ = 550560.

The previous prime is 715943. The next prime is 715961. The reversal of 715945 is 549517.

It can be written as a sum of positive squares in 2 ways, for example, as 162409 + 553536 = 403^2 + 744^2 .

It is not a de Polignac number, because 715945 - 2¹ = 715943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (715943) 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 11 ways as a sum of consecutive naturals, for example, 4731 + ... + 4879.

It is an arithmetic number, because the mean of its divisors is an integer number (74475).

2⁷¹⁵⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

715945 is a deficient number, since it is larger than the sum of its proper divisors (177755).

715945 is a wasteful number, since it uses less digits than its factorization.

715945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 185 counting only the distinct ones).

The product of its digits is 6300, while the sum is 31.

The square root of 715945 is about 846.1353319653. The cubic root of 715945 is about 89.4595179114.

The spelling of 715945 in words is "seven hundred fifteen thousand, nine hundred forty-five".