64091198 has 16 divisors (see below), whose sum is σ = 100270464. Its totient is φ = 30689280.

The previous prime is 64091197. The next prime is 64091219. The reversal of 64091198 is 89119046.

It is a happy number.

It is a super-2 number, since 2×64091198² = 8215363322150408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64091197) 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, 686 + ... + 11342.

It is an arithmetic number, because the mean of its divisors is an integer number (6266904).

Almost surely, 2^64091198 is an apocalyptic number.

64091198 is a deficient number, since it is larger than the sum of its proper divisors (36179266).

64091198 is a wasteful number, since it uses less digits than its factorization.

64091198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10787.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 64091198 is about 8005.6978459095. The cubic root of 64091198 is about 400.1899056587.

The spelling of 64091198 in words is "sixty-four million, ninety-one thousand, one hundred ninety-eight".