616542089 has 2 divisors, whose sum is σ = 616542090. Its totient is φ = 616542088.

The previous prime is 616542053. The next prime is 616542103. The reversal of 616542089 is 980245616.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 464833600 + 151708489 = 21560^2 + 12317^2 .

It is a cyclic number.

It is not a de Polignac number, because 616542089 - 2²⁰ = 615493513 is a prime.

It is not a weakly prime, because it can be changed into another prime (616742089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308271044 + 308271045.

It is an arithmetic number, because the mean of its divisors is an integer number (308271045).

Almost surely, 2^616542089 is an apocalyptic number.

It is an amenable number.

616542089 is a deficient number, since it is larger than the sum of its proper divisors (1).

616542089 is an equidigital number, since it uses as much as digits as its factorization.

616542089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 616542089 is about 24830.2655845643. The cubic root of 616542089 is about 851.1136908121.

The spelling of 616542089 in words is "six hundred sixteen million, five hundred forty-two thousand, eighty-nine".