97018791 has 8 divisors (see below), whose sum is σ = 129408624. Its totient is φ = 64654080.

The previous prime is 97018787. The next prime is 97018799. The reversal of 97018791 is 19781079.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 97018791 - 2² = 97018787 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97018799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6381 + ... + 15321.

It is an arithmetic number, because the mean of its divisors is an integer number (16176078).

Almost surely, 2^97018791 is an apocalyptic number.

97018791 is a deficient number, since it is larger than the sum of its proper divisors (32389833).

97018791 is a wasteful number, since it uses less digits than its factorization.

97018791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12561.

The product of its (nonzero) digits is 31752, while the sum is 42.

The square root of 97018791 is about 9849.8117240889. The cubic root of 97018791 is about 459.4997570729.

The spelling of 97018791 in words is "ninety-seven million, eighteen thousand, seven hundred ninety-one".