64862197 has 2 divisors, whose sum is σ = 64862198. Its totient is φ = 64862196.

The previous prime is 64862177. The next prime is 64862227. The reversal of 64862197 is 79126846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43573201 + 21288996 = 6601^2 + 4614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64862197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64862107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32431098 + 32431099.

It is an arithmetic number, because the mean of its divisors is an integer number (32431099).

Almost surely, 2^64862197 is an apocalyptic number.

It is an amenable number.

64862197 is a deficient number, since it is larger than the sum of its proper divisors (1).

64862197 is an equidigital number, since it uses as much as digits as its factorization.

64862197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 64862197 is about 8053.7070346518. The cubic root of 64862197 is about 401.7882373545.

The spelling of 64862197 in words is "sixty-four million, eight hundred sixty-two thousand, one hundred ninety-seven".