97143647 has 6 divisors (see below), whose sum is σ = 99013992. Its totient is φ = 95307992.

The previous prime is 97143643. The next prime is 97143653. The reversal of 97143647 is 74634179.

It is not a de Polignac number, because 97143647 - 2² = 97143643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97143643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14483 + ... + 20100.

It is an arithmetic number, because the mean of its divisors is an integer number (16502332).

Almost surely, 2^97143647 is an apocalyptic number.

97143647 is a deficient number, since it is larger than the sum of its proper divisors (1870345).

97143647 is an equidigital number, since it uses as much as digits as its factorization.

97143647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34689 (or 34636 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 97143647 is about 9856.1476754359. The cubic root of 97143647 is about 459.6967866304.

The spelling of 97143647 in words is "ninety-seven million, one hundred forty-three thousand, six hundred forty-seven".