64115867 has 4 divisors (see below), whose sum is σ = 64836360. Its totient is φ = 63395376.

The previous prime is 64115803. The next prime is 64115879. The reversal of 64115867 is 76851146.

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 64115867 - 2⁶ = 64115803 is a prime.

It is a super-2 number, since 2×64115867² = 8221688802323378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64115867.

It is not an unprimeable number, because it can be changed into a prime (64115767) 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, 360113 + ... + 360290.

It is an arithmetic number, because the mean of its divisors is an integer number (16209090).

Almost surely, 2^64115867 is an apocalyptic number.

64115867 is a deficient number, since it is larger than the sum of its proper divisors (720493).

64115867 is an equidigital number, since it uses as much as digits as its factorization.

64115867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720492.

The product of its digits is 40320, while the sum is 38.

The square root of 64115867 is about 8007.2384128362. The cubic root of 64115867 is about 400.2412440573.

The spelling of 64115867 in words is "sixty-four million, one hundred fifteen thousand, eight hundred sixty-seven".