617630747 has 2 divisors, whose sum is σ = 617630748. Its totient is φ = 617630746.

The previous prime is 617630737. The next prime is 617630749. The reversal of 617630747 is 747036716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 617630747 - 2¹² = 617626651 is a prime.

Together with 617630749, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (617630749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308815373 + 308815374.

It is an arithmetic number, because the mean of its divisors is an integer number (308815374).

Almost surely, 2^617630747 is an apocalyptic number.

617630747 is a deficient number, since it is larger than the sum of its proper divisors (1).

617630747 is an equidigital number, since it uses as much as digits as its factorization.

617630747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 617630747 is about 24852.1779126096. The cubic root of 617630747 is about 851.6143470340.

The spelling of 617630747 in words is "six hundred seventeen million, six hundred thirty thousand, seven hundred forty-seven".