947609657 has 2 divisors, whose sum is σ = 947609658. Its totient is φ = 947609656.

The previous prime is 947609633. The next prime is 947609681. The reversal of 947609657 is 756906749.

947609657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (947609633) and next prime (947609681).

It can be written as a sum of positive squares in only one way, i.e., 856674361 + 90935296 = 29269^2 + 9536^2 .

It is an emirp because it is prime and its reverse (756906749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947609657 - 2¹⁰ = 947608633 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 947609599 and 947609608.

It is not a weakly prime, because it can be changed into another prime (947602657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473804828 + 473804829.

It is an arithmetic number, because the mean of its divisors is an integer number (473804829).

Almost surely, 2^947609657 is an apocalyptic number.

It is an amenable number.

947609657 is a deficient number, since it is larger than the sum of its proper divisors (1).

947609657 is an equidigital number, since it uses as much as digits as its factorization.

947609657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The square root of 947609657 is about 30783.2691083972. The cubic root of 947609657 is about 982.2223814468. Note that the first 3 decimals are identical.

The spelling of 947609657 in words is "nine hundred forty-seven million, six hundred nine thousand, six hundred fifty-seven".