64281197 has 8 divisors (see below), whose sum is σ = 68643840. Its totient is φ = 60061680.

The previous prime is 64281137. The next prime is 64281223. The reversal of 64281197 is 79118246.

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 64281197 - 2⁸ = 64280941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64281197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64281127) 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, 34853 + ... + 36650.

It is an arithmetic number, because the mean of its divisors is an integer number (8580480).

Almost surely, 2^64281197 is an apocalyptic number.

It is an amenable number.

64281197 is a deficient number, since it is larger than the sum of its proper divisors (4362643).

64281197 is a wasteful number, since it uses less digits than its factorization.

64281197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71563.

The product of its digits is 24192, while the sum is 38.

The square root of 64281197 is about 8017.5555501661. Note that the first 5 decimals coincide. The cubic root of 64281197 is about 400.5849711881.

The spelling of 64281197 in words is "sixty-four million, two hundred eighty-one thousand, one hundred ninety-seven".