64099887 has 8 divisors (see below), whose sum is σ = 86296704. Its totient is φ = 42318168.

The previous prime is 64099879. The next prime is 64099907. The reversal of 64099887 is 78899046.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64099887 - 2³ = 64099879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64099817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103413 + ... + 104030.

It is an arithmetic number, because the mean of its divisors is an integer number (10787088).

Almost surely, 2^64099887 is an apocalyptic number.

64099887 is a deficient number, since it is larger than the sum of its proper divisors (22196817).

64099887 is a wasteful number, since it uses less digits than its factorization.

64099887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207549.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 64099887 is about 8006.2405035072. The cubic root of 64099887 is about 400.2079897486.

The spelling of 64099887 in words is "sixty-four million, ninety-nine thousand, eight hundred eighty-seven".