97001681 has 4 divisors (see below), whose sum is σ = 110859072. Its totient is φ = 83144292.

The previous prime is 97001659. The next prime is 97001689. The reversal of 97001681 is 18610079.

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 not a de Polignac number, because 97001681 - 2¹⁴ = 96985297 is a prime.

It is a super-2 number, since 2×97001681² = 18818652233651522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97001689) 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, 6928685 + ... + 6928698.

It is an arithmetic number, because the mean of its divisors is an integer number (27714768).

Almost surely, 2^97001681 is an apocalyptic number.

It is an amenable number.

97001681 is a deficient number, since it is larger than the sum of its proper divisors (13857391).

97001681 is a wasteful number, since it uses less digits than its factorization.

97001681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13857390.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 97001681 is about 9848.9431412716. The cubic root of 97001681 is about 459.4727433951.

The spelling of 97001681 in words is "ninety-seven million, one thousand, six hundred eighty-one".