64092689 has 4 divisors (see below), whose sum is σ = 64157220. Its totient is φ = 64028160.

The previous prime is 64092673. The next prime is 64092701. The reversal of 64092689 is 98629046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98629046 = 2 ⋅49314523.

It can be written as a sum of positive squares in 2 ways, for example, as 30162064 + 33930625 = 5492^2 + 5825^2 .

It is a cyclic number.

It is not a de Polignac number, because 64092689 - 2⁴ = 64092673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64092649) 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, 30752 + ... + 32769.

It is an arithmetic number, because the mean of its divisors is an integer number (16039305).

Almost surely, 2^64092689 is an apocalyptic number.

It is an amenable number.

64092689 is a deficient number, since it is larger than the sum of its proper divisors (64531).

64092689 is a wasteful number, since it uses less digits than its factorization.

64092689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64530.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 64092689 is about 8005.7909665442. The cubic root of 64092689 is about 400.1930089372.

The spelling of 64092689 in words is "sixty-four million, ninety-two thousand, six hundred eighty-nine".