64198887 has 8 divisors (see below), whose sum is σ = 86077440. Its totient is φ = 42559800.

The previous prime is 64198879. The next prime is 64198889. The reversal of 64198887 is 78889146.

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

It is not a de Polignac number, because 64198887 - 2³ = 64198879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64198889) 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, 59239 + ... + 60312.

It is an arithmetic number, because the mean of its divisors is an integer number (10759680).

Almost surely, 2^64198887 is an apocalyptic number.

64198887 is a deficient number, since it is larger than the sum of its proper divisors (21878553).

64198887 is a wasteful number, since it uses less digits than its factorization.

64198887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119733.

The product of its digits is 774144, while the sum is 51.

The square root of 64198887 is about 8012.4207952403. The cubic root of 64198887 is about 400.4139194457.

The spelling of 64198887 in words is "sixty-four million, one hundred ninety-eight thousand, eight hundred eighty-seven".