615113 has 4 divisors (see below), whose sum is σ = 622608. Its totient is φ = 607620.

The previous prime is 615107. The next prime is 615137. The reversal of 615113 is 311516.

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 a cyclic number.

It is not a de Polignac number, because 615113 - 2¹⁴ = 598729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 615091 and 615100.

It is not an unprimeable number, because it can be changed into a prime (615103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3623 + ... + 3788.

It is an arithmetic number, because the mean of its divisors is an integer number (155652).

2⁶¹⁵¹¹³ is an apocalyptic number.

It is an amenable number.

615113 is a deficient number, since it is larger than the sum of its proper divisors (7495).

615113 is an equidigital number, since it uses as much as digits as its factorization.

615113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7494.

The product of its digits is 90, while the sum is 17.

The square root of 615113 is about 784.2913999273. The cubic root of 615113 is about 85.0455580459.

Adding to 615113 its reverse (311516), we get a palindrome (926629).

The spelling of 615113 in words is "six hundred fifteen thousand, one hundred thirteen".