47644697 has 2 divisors, whose sum is σ = 47644698. Its totient is φ = 47644696.

The previous prime is 47644679. The next prime is 47644703. The reversal of 47644697 is 79644674.

Together with previous prime (47644679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37810201 + 9834496 = 6149^2 + 3136^2 .

It is a cyclic number.

It is not a de Polignac number, because 47644697 - 2¹² = 47640601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47644657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23822348 + 23822349.

It is an arithmetic number, because the mean of its divisors is an integer number (23822349).

Almost surely, 2^47644697 is an apocalyptic number.

It is an amenable number.

47644697 is a deficient number, since it is larger than the sum of its proper divisors (1).

47644697 is an equidigital number, since it uses as much as digits as its factorization.

47644697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 47.

The square root of 47644697 is about 6902.5138174436. The cubic root of 47644697 is about 362.5251907980.

The spelling of 47644697 in words is "forty-seven million, six hundred forty-four thousand, six hundred ninety-seven".