64195047 has 36 divisors (see below), whose sum is σ = 112572720. Its totient is φ = 35082432.

The previous prime is 64195039. The next prime is 64195051. The reversal of 64195047 is 74059146.

64195047 is a `hidden beast` number, since 641 + 9 + 5 + 0 + 4 + 7 = 666.

It is not a de Polignac number, because 64195047 - 2³ = 64195039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64195057) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6979 + ... + 13307.

It is an arithmetic number, because the mean of its divisors is an integer number (3127020).

Almost surely, 2^64195047 is an apocalyptic number.

64195047 is a deficient number, since it is larger than the sum of its proper divisors (48377673).

64195047 is a wasteful number, since it uses less digits than its factorization.

64195047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372 (or 6362 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 64195047 is about 8012.1811637032. The cubic root of 64195047 is about 400.4059358176.

The spelling of 64195047 in words is "sixty-four million, one hundred ninety-five thousand, forty-seven".