615963 has 16 divisors (see below), whose sum is σ = 875520. Its totient is φ = 384384.

The previous prime is 615949. The next prime is 615971. The reversal of 615963 is 369516.

It is a happy number.

615963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 615963 - 2¹⁶ = 550427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 615963.

It is not an unprimeable number, because it can be changed into a prime (614963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5395 + ... + 5507.

It is an arithmetic number, because the mean of its divisors is an integer number (54720).

2⁶¹⁵⁹⁶³ is an apocalyptic number.

615963 is a deficient number, since it is larger than the sum of its proper divisors (259557).

615963 is a wasteful number, since it uses less digits than its factorization.

615963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218.

The product of its digits is 4860, while the sum is 30.

The square root of 615963 is about 784.8331032774. The cubic root of 615963 is about 85.0847136981.

The spelling of 615963 in words is "six hundred fifteen thousand, nine hundred sixty-three".