97071647 has 4 divisors (see below), whose sum is σ = 97139640. Its totient is φ = 97003656.

The previous prime is 97071643. The next prime is 97071659. The reversal of 97071647 is 74617079.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97071647 - 2² = 97071643 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 (97071643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31808 + ... + 34725.

It is an arithmetic number, because the mean of its divisors is an integer number (24284910).

Almost surely, 2^97071647 is an apocalyptic number.

97071647 is a deficient number, since it is larger than the sum of its proper divisors (67993).

97071647 is a wasteful number, since it uses less digits than its factorization.

97071647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67992.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 97071647 is about 9852.4944557203. The cubic root of 97071647 is about 459.5831873364.

The spelling of 97071647 in words is "ninety-seven million, seventy-one thousand, six hundred forty-seven".