64972195 has 8 divisors (see below), whose sum is σ = 78490800. Its totient is φ = 51628320.

The previous prime is 64972163. The next prime is 64972199. The reversal of 64972195 is 59127946.

It is a happy number.

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

It is not a de Polignac number, because 64972195 - 2⁵ = 64972163 is a prime.

It is a super-2 number, since 2×64972195² = 8442772246236050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64972199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42861 + ... + 44350.

It is an arithmetic number, because the mean of its divisors is an integer number (9811350).

Almost surely, 2^64972195 is an apocalyptic number.

64972195 is a deficient number, since it is larger than the sum of its proper divisors (13518605).

64972195 is a wasteful number, since it uses less digits than its factorization.

64972195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87365.

The product of its digits is 136080, while the sum is 43.

The square root of 64972195 is about 8060.5331709509. The cubic root of 64972195 is about 402.0152362566.

The spelling of 64972195 in words is "sixty-four million, nine hundred seventy-two thousand, one hundred ninety-five".