75639699 has 6 divisors (see below), whose sum is σ = 109257356. Its totient is φ = 50426460.

The previous prime is 75639689. The next prime is 75639737. The reversal of 75639699 is 99693657.

It is not a de Polignac number, because 75639699 - 2⁵ = 75639667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75639649) 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 5 ways as a sum of consecutive naturals, for example, 4202197 + ... + 4202214.

Almost surely, 2^75639699 is an apocalyptic number.

75639699 is a deficient number, since it is larger than the sum of its proper divisors (33617657).

75639699 is a wasteful number, since it uses less digits than its factorization.

75639699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8404417 (or 8404414 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 54.

The square root of 75639699 is about 8697.1086574792. The cubic root of 75639699 is about 422.9119243884.

The spelling of 75639699 in words is "seventy-five million, six hundred thirty-nine thousand, six hundred ninety-nine".