97913643 has 16 divisors (see below), whose sum is σ = 134722560. Its totient is φ = 63219456.

The previous prime is 97913639. The next prime is 97913653. The reversal of 97913643 is 34631979.

It is not a de Polignac number, because 97913643 - 2² = 97913639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97913595 and 97913604.

It is not an unprimeable number, because it can be changed into a prime (97913633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10098 + ... + 17256.

It is an arithmetic number, because the mean of its divisors is an integer number (8420160).

Almost surely, 2^97913643 is an apocalyptic number.

97913643 is a deficient number, since it is larger than the sum of its proper divisors (36808917).

97913643 is a wasteful number, since it uses less digits than its factorization.

97913643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7306.

The product of its digits is 122472, while the sum is 42.

The square root of 97913643 is about 9895.1322881506. The cubic root of 97913643 is about 460.9081664673.

The spelling of 97913643 in words is "ninety-seven million, nine hundred thirteen thousand, six hundred forty-three".