64279477 has 2 divisors, whose sum is σ = 64279478. Its totient is φ = 64279476.

The previous prime is 64279447. The next prime is 64279507. The reversal of 64279477 is 77497246.

It is a balanced prime because it is at equal distance from previous prime (64279447) and next prime (64279507).

It can be written as a sum of positive squares in only one way, i.e., 33709636 + 30569841 = 5806^2 + 5529^2 .

It is a cyclic number.

It is not a de Polignac number, because 64279477 - 2¹¹ = 64277429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64279427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32139738 + 32139739.

It is an arithmetic number, because the mean of its divisors is an integer number (32139739).

Almost surely, 2^64279477 is an apocalyptic number.

It is an amenable number.

64279477 is a deficient number, since it is larger than the sum of its proper divisors (1).

64279477 is an equidigital number, since it uses as much as digits as its factorization.

64279477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 46.

The square root of 64279477 is about 8017.4482848348. The cubic root of 64279477 is about 400.5813982807.

The spelling of 64279477 in words is "sixty-four million, two hundred seventy-nine thousand, four hundred seventy-seven".