1315690 has 16 divisors (see below), whose sum is σ = 2426760. Its totient is φ = 513280.

The previous prime is 1315673. The next prime is 1315697. The reversal of 1315690 is 965131.

It can be written as a sum of positive squares in 4 ways, for example, as 751689 + 564001 = 867^2 + 751^2 .

It is a super-2 number, since 2×1315690² = 3462080352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1315697) 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, 1195 + ... + 2014.

2^1315690 is an apocalyptic number.

1315690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1315690 is a deficient number, since it is larger than the sum of its proper divisors (1111070).

1315690 is a wasteful number, since it uses less digits than its factorization.

1315690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1315690 is about 1147.0353089596. The cubic root of 1315690 is about 109.5766093725.

The spelling of 1315690 in words is "one million, three hundred fifteen thousand, six hundred ninety".