615967 has 4 divisors (see below), whose sum is σ = 671976. Its totient is φ = 559960.

The previous prime is 615949. The next prime is 615971. The reversal of 615967 is 769516.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-615967 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 (615907) 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 3 ways as a sum of consecutive naturals, for example, 27988 + ... + 28009.

It is an arithmetic number, because the mean of its divisors is an integer number (167994).

2⁶¹⁵⁹⁶⁷ is an apocalyptic number.

615967 is a deficient number, since it is larger than the sum of its proper divisors (56009).

615967 is a wasteful number, since it uses less digits than its factorization.

615967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56008.

The product of its digits is 11340, while the sum is 34.

The square root of 615967 is about 784.8356515857. The cubic root of 615967 is about 85.0848978749.

It can be divided in two parts, 6159 and 67, that added together give a palindrome (6226).

The spelling of 615967 in words is "six hundred fifteen thousand, nine hundred sixty-seven".