64158743 has 4 divisors (see below), whose sum is σ = 69991368. Its totient is φ = 58326120.

The previous prime is 64158737. The next prime is 64158761. The reversal of 64158743 is 34785146.

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

It is a cyclic number.

It is not a de Polignac number, because 64158743 - 2²² = 59964439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64158697 and 64158706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64158443) 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, 2916296 + ... + 2916317.

It is an arithmetic number, because the mean of its divisors is an integer number (17497842).

Almost surely, 2^64158743 is an apocalyptic number.

64158743 is a deficient number, since it is larger than the sum of its proper divisors (5832625).

64158743 is a wasteful number, since it uses less digits than its factorization.

64158743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5832624.

The product of its digits is 80640, while the sum is 38.

The square root of 64158743 is about 8009.9152929354. The cubic root of 64158743 is about 400.3304415292.

The spelling of 64158743 in words is "sixty-four million, one hundred fifty-eight thousand, seven hundred forty-three".