73699897 has 4 divisors (see below), whose sum is σ = 73768420. Its totient is φ = 73631376.

The previous prime is 73699861. The next prime is 73699907. The reversal of 73699897 is 79899637.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34999056 + 38700841 = 5916^2 + 6221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73699897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73694897) 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, 32622 + ... + 34807.

It is an arithmetic number, because the mean of its divisors is an integer number (18442105).

Almost surely, 2^73699897 is an apocalyptic number.

It is an amenable number.

73699897 is a deficient number, since it is larger than the sum of its proper divisors (68523).

73699897 is a wasteful number, since it uses less digits than its factorization.

73699897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68522.

The product of its digits is 5143824, while the sum is 58.

The square root of 73699897 is about 8584.8644136061. The cubic root of 73699897 is about 419.2653388900.

The spelling of 73699897 in words is "seventy-three million, six hundred ninety-nine thousand, eight hundred ninety-seven".