97601681 has 4 divisors (see below), whose sum is σ = 98346864. Its totient is φ = 96856500.

The previous prime is 97601663. The next prime is 97601687. The reversal of 97601681 is 18610679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97601681 - 2¹⁸ = 97339537 is a prime.

It is a super-2 number, since 2×97601681² = 19052176268051522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97601687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372395 + ... + 372656.

It is an arithmetic number, because the mean of its divisors is an integer number (24586716).

Almost surely, 2^97601681 is an apocalyptic number.

It is an amenable number.

97601681 is a deficient number, since it is larger than the sum of its proper divisors (745183).

97601681 is a wasteful number, since it uses less digits than its factorization.

97601681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745182.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 97601681 is about 9879.3563049421. The cubic root of 97601681 is about 460.4181468782.

The spelling of 97601681 in words is "ninety-seven million, six hundred one thousand, six hundred eighty-one".