616624979 has 2 divisors, whose sum is σ = 616624980. Its totient is φ = 616624978.

The previous prime is 616624961. The next prime is 616624997. The reversal of 616624979 is 979426616.

Together with next prime (616624997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (616624961) and next prime (616624997).

It is a cyclic number.

It is not a de Polignac number, because 616624979 - 2¹² = 616620883 is a prime.

It is not a weakly prime, because it can be changed into another prime (616621979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308312489 + 308312490.

It is an arithmetic number, because the mean of its divisors is an integer number (308312490).

Almost surely, 2^616624979 is an apocalyptic number.

616624979 is a deficient number, since it is larger than the sum of its proper divisors (1).

616624979 is an equidigital number, since it uses as much as digits as its factorization.

616624979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 50.

The square root of 616624979 is about 24831.9346608354. The cubic root of 616624979 is about 851.1518313023.

The spelling of 616624979 in words is "six hundred sixteen million, six hundred twenty-four thousand, nine hundred seventy-nine".