64197805 has 16 divisors (see below), whose sum is σ = 88470144. Its totient is φ = 43807680.

The previous prime is 64197799. The next prime is 64197811. The reversal of 64197805 is 50879146.

It is an interprime number because it is at equal distance from previous prime (64197799) and next prime (64197811).

It is not a de Polignac number, because 64197805 - 2⁵ = 64197773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3039 + ... + 11731.

It is an arithmetic number, because the mean of its divisors is an integer number (5529384).

Almost surely, 2^64197805 is an apocalyptic number.

It is an amenable number.

64197805 is a deficient number, since it is larger than the sum of its proper divisors (24272339).

64197805 is a wasteful number, since it uses less digits than its factorization.

64197805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 64197805 is about 8012.3532747876. The cubic root of 64197805 is about 400.4116699243.

The spelling of 64197805 in words is "sixty-four million, one hundred ninety-seven thousand, eight hundred five".