97644047 has 2 divisors, whose sum is σ = 97644048. Its totient is φ = 97644046.

The previous prime is 97644037. The next prime is 97644061. The reversal of 97644047 is 74044679.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97644047 - 2⁴ = 97644031 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97643995 and 97644013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97644037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48822023 + 48822024.

It is an arithmetic number, because the mean of its divisors is an integer number (48822024).

Almost surely, 2^97644047 is an apocalyptic number.

97644047 is a deficient number, since it is larger than the sum of its proper divisors (1).

97644047 is an equidigital number, since it uses as much as digits as its factorization.

97644047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 97644047 is about 9881.5002403481. The cubic root of 97644047 is about 460.4847552035.

The spelling of 97644047 in words is "ninety-seven million, six hundred forty-four thousand, forty-seven".