75899669 has 4 divisors (see below), whose sum is σ = 75920640. Its totient is φ = 75878700.

The previous prime is 75899647. The next prime is 75899671. The reversal of 75899669 is 96699857.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75899669 is a prime.

It is a super-2 number, since 2×75899669² = 11521519508619122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75899069) 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, 3509 + ... + 12810.

It is an arithmetic number, because the mean of its divisors is an integer number (18980160).

Almost surely, 2^75899669 is an apocalyptic number.

It is an amenable number.

75899669 is a deficient number, since it is larger than the sum of its proper divisors (20971).

75899669 is a wasteful number, since it uses less digits than its factorization.

75899669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20970.

The product of its digits is 7348320, while the sum is 59.

The square root of 75899669 is about 8712.0416091752. The cubic root of 75899669 is about 423.3958796681.

The spelling of 75899669 in words is "seventy-five million, eight hundred ninety-nine thousand, six hundred sixty-nine".