615883489 has 27 divisors (see below), whose sum is σ = 705660627. Its totient is φ = 537238416.

The previous prime is 615883487. The next prime is 615883493. The reversal of 615883489 is 984388516.

The square root of 615883489 is 24817.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 524776464 = 9545^2 + 22908^2 .

It is not a de Polignac number, because 615883489 - 2¹ = 615883487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615883481) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7420242 + ... + 7420324.

Almost surely, 2^615883489 is an apocalyptic number.

615883489 is the 24817-th square number.

615883489 is the 12409-th centered octagonal number.

It is an amenable number.

615883489 is a deficient number, since it is larger than the sum of its proper divisors (89777138).

615883489 is an equidigital number, since it uses as much as digits as its factorization.

615883489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 119 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The cubic root of 615883489 is about 850.8105251407.

The spelling of 615883489 in words is "six hundred fifteen million, eight hundred eighty-three thousand, four hundred eighty-nine".