916620609 has 8 divisors (see below), whose sum is σ = 1234760800. Its totient is φ = 604780416.

The previous prime is 916620599. The next prime is 916620611. The reversal of 916620609 is 906026619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 916620609 - 2⁵ = 916620577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916620619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1574659 + ... + 1575240.

It is an arithmetic number, because the mean of its divisors is an integer number (154345100).

Almost surely, 2^916620609 is an apocalyptic number.

It is an amenable number.

916620609 is a deficient number, since it is larger than the sum of its proper divisors (318140191).

916620609 is a wasteful number, since it uses less digits than its factorization.

916620609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149999.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 916620609 is about 30275.7429140888. The cubic root of 916620609 is about 971.3965108127.

The spelling of 916620609 in words is "nine hundred sixteen million, six hundred twenty thousand, six hundred nine".