616366009 has 4 divisors (see below), whose sum is σ = 704418304. Its totient is φ = 528313716.

The previous prime is 616366007. The next prime is 616366019. The reversal of 616366009 is 900663616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 616366009 - 2¹ = 616366007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616366007) 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, 44026137 + ... + 44026150.

It is an arithmetic number, because the mean of its divisors is an integer number (176104576).

Almost surely, 2^616366009 is an apocalyptic number.

It is an amenable number.

616366009 is a deficient number, since it is larger than the sum of its proper divisors (88052295).

616366009 is an equidigital number, since it uses as much as digits as its factorization.

616366009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88052294.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 616366009 is about 24826.7196584647. The cubic root of 616366009 is about 851.0326591084.

The spelling of 616366009 in words is "six hundred sixteen million, three hundred sixty-six thousand, nine".