616730407 has 2 divisors, whose sum is σ = 616730408. Its totient is φ = 616730406.

The previous prime is 616730339. The next prime is 616730417. The reversal of 616730407 is 704037616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616730407 - 2¹⁵ = 616697639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616730417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308365203 + 308365204.

It is an arithmetic number, because the mean of its divisors is an integer number (308365204).

Almost surely, 2^616730407 is an apocalyptic number.

616730407 is a deficient number, since it is larger than the sum of its proper divisors (1).

616730407 is an equidigital number, since it uses as much as digits as its factorization.

616730407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 616730407 is about 24834.0574010773. The cubic root of 616730407 is about 851.2003373498.

The spelling of 616730407 in words is "six hundred sixteen million, seven hundred thirty thousand, four hundred seven".