96721691 has 8 divisors (see below), whose sum is σ = 106215168. Its totient is φ = 87345000.

The previous prime is 96721673. The next prime is 96721697. The reversal of 96721691 is 19612769.

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

It is a cyclic number.

It is not a de Polignac number, because 96721691 - 2²² = 92527387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (96721697) 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, 27455 + ... + 30776.

It is an arithmetic number, because the mean of its divisors is an integer number (13276896).

Almost surely, 2^96721691 is an apocalyptic number.

96721691 is a deficient number, since it is larger than the sum of its proper divisors (9493477).

96721691 is a wasteful number, since it uses less digits than its factorization.

96721691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58393.

The product of its digits is 40824, while the sum is 41.

The square root of 96721691 is about 9834.7186538304. The cubic root of 96721691 is about 459.0302364571.

The spelling of 96721691 in words is "ninety-six million, seven hundred twenty-one thousand, six hundred ninety-one".