64269689 has 4 divisors (see below), whose sum is σ = 70112400. Its totient is φ = 58426980.

The previous prime is 64269679. The next prime is 64269731. The reversal of 64269689 is 98696246.

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-64269689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64269619) 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, 2921339 + ... + 2921360.

It is an arithmetic number, because the mean of its divisors is an integer number (17528100).

Almost surely, 2^64269689 is an apocalyptic number.

It is an amenable number.

64269689 is a deficient number, since it is larger than the sum of its proper divisors (5842711).

64269689 is a wasteful number, since it uses less digits than its factorization.

64269689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842710.

The product of its digits is 1119744, while the sum is 50.

The square root of 64269689 is about 8016.8378429403. The cubic root of 64269689 is about 400.5610647313.

The spelling of 64269689 in words is "sixty-four million, two hundred sixty-nine thousand, six hundred eighty-nine".