616697308907 has 4 divisors (see below), whose sum is σ = 621198749256. Its totient is φ = 612195868560.

The previous prime is 616697308861. The next prime is 616697308937. The reversal of 616697308907 is 709803796616.

616697308907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616697308907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 616697308907.

It is not an unprimeable number, because it can be changed into a prime (616697308937) 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, 2250719969 + ... + 2250720242.

It is an arithmetic number, because the mean of its divisors is an integer number (155299687314).

Almost surely, 2^616697308907 is an apocalyptic number.

616697308907 is a deficient number, since it is larger than the sum of its proper divisors (4501440349).

616697308907 is a wasteful number, since it uses less digits than its factorization.

616697308907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501440348.

The product of its (nonzero) digits is 20575296, while the sum is 62.

The spelling of 616697308907 in words is "six hundred sixteen billion, six hundred ninety-seven million, three hundred eight thousand, nine hundred seven".