64198655 has 8 divisors (see below), whose sum is σ = 77182512. Its totient is φ = 51262848.

The previous prime is 64198633. The next prime is 64198669. The reversal of 64198655 is 55689146.

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

It is a cyclic number.

It is not a de Polignac number, because 64198655 - 2¹⁶ = 64133119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9002 + ... + 14471.

It is an arithmetic number, because the mean of its divisors is an integer number (9647814).

Almost surely, 2^64198655 is an apocalyptic number.

64198655 is a deficient number, since it is larger than the sum of its proper divisors (12983857).

64198655 is a wasteful number, since it uses less digits than its factorization.

64198655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24025.

The product of its digits is 259200, while the sum is 44.

The square root of 64198655 is about 8012.4063177051. The cubic root of 64198655 is about 400.4134371105.

The spelling of 64198655 in words is "sixty-four million, one hundred ninety-eight thousand, six hundred fifty-five".