64986457 has 2 divisors, whose sum is σ = 64986458. Its totient is φ = 64986456.

The previous prime is 64986451. The next prime is 64986463. The reversal of 64986457 is 75468946.

It is a balanced prime because it is at equal distance from previous prime (64986451) and next prime (64986463).

It can be written as a sum of positive squares in only one way, i.e., 63536841 + 1449616 = 7971^2 + 1204^2 .

It is a cyclic number.

It is not a de Polignac number, because 64986457 - 2¹⁵ = 64953689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64986457.

It is not a weakly prime, because it can be changed into another prime (64986451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32493228 + 32493229.

It is an arithmetic number, because the mean of its divisors is an integer number (32493229).

Almost surely, 2^64986457 is an apocalyptic number.

It is an amenable number.

64986457 is a deficient number, since it is larger than the sum of its proper divisors (1).

64986457 is an equidigital number, since it uses as much as digits as its factorization.

64986457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 64986457 is about 8061.4178033396. The cubic root of 64986457 is about 402.0446494634.

The spelling of 64986457 in words is "sixty-four million, nine hundred eighty-six thousand, four hundred fifty-seven".