617072947 has 2 divisors, whose sum is σ = 617072948. Its totient is φ = 617072946.

The previous prime is 617072903. The next prime is 617073047. The reversal of 617072947 is 749270716.

617072947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-617072947 is a prime.

It is not a weakly prime, because it can be changed into another prime (617076947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308536473 + 308536474.

It is an arithmetic number, because the mean of its divisors is an integer number (308536474).

Almost surely, 2^617072947 is an apocalyptic number.

617072947 is a deficient number, since it is larger than the sum of its proper divisors (1).

617072947 is an equidigital number, since it uses as much as digits as its factorization.

617072947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 617072947 is about 24840.9530211705. The cubic root of 617072947 is about 851.3578973881.

The spelling of 617072947 in words is "six hundred seventeen million, seventy-two thousand, nine hundred forty-seven".