615263 has 4 divisors (see below), whose sum is σ = 671208. Its totient is φ = 559320.

The previous prime is 615259. The next prime is 615269. The reversal of 615263 is 362516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 615263 - 2² = 615259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615269) 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, 27956 + ... + 27977.

It is an arithmetic number, because the mean of its divisors is an integer number (167802).

2⁶¹⁵²⁶³ is an apocalyptic number.

615263 is a deficient number, since it is larger than the sum of its proper divisors (55945).

615263 is a wasteful number, since it uses less digits than its factorization.

615263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55944.

The product of its digits is 1080, while the sum is 23.

The square root of 615263 is about 784.3870218202. The cubic root of 615263 is about 85.0524704868.

Adding to 615263 its reverse (362516), we get a palindrome (977779).

It can be divided in two parts, 615 and 263, that added together give a palindrome (878).

The spelling of 615263 in words is "six hundred fifteen thousand, two hundred sixty-three".