616967409 has 8 divisors (see below), whose sum is σ = 824401792. Its totient is φ = 410422320.

The previous prime is 616967401. The next prime is 616967437. The reversal of 616967409 is 904769616.

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

It is not a de Polignac number, because 616967409 - 2³ = 616967401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616967401) 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, 220702 + ... + 223479.

It is an arithmetic number, because the mean of its divisors is an integer number (103050224).

Almost surely, 2^616967409 is an apocalyptic number.

It is an amenable number.

616967409 is a deficient number, since it is larger than the sum of its proper divisors (207434383).

616967409 is a wasteful number, since it uses less digits than its factorization.

616967409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444647.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 616967409 is about 24838.8286559572. The cubic root of 616967409 is about 851.3093587007.

The spelling of 616967409 in words is "six hundred sixteen million, nine hundred sixty-seven thousand, four hundred nine".