73698691 has 4 divisors (see below), whose sum is σ = 80398584. Its totient is φ = 66998800.

The previous prime is 73698661. The next prime is 73698697. The reversal of 73698691 is 19689637.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 73698691 - 2⁵ = 73698659 is a prime.

It is a super-2 number, since 2×73698691² = 10862994110226962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73698697) 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, 3349930 + ... + 3349951.

It is an arithmetic number, because the mean of its divisors is an integer number (20099646).

Almost surely, 2^73698691 is an apocalyptic number.

73698691 is a deficient number, since it is larger than the sum of its proper divisors (6699893).

73698691 is a wasteful number, since it uses less digits than its factorization.

73698691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6699892.

The product of its digits is 489888, while the sum is 49.

The square root of 73698691 is about 8584.7941734208. The cubic root of 73698691 is about 419.2630519724.

The spelling of 73698691 in words is "seventy-three million, six hundred ninety-eight thousand, six hundred ninety-one".