64763849 has 2 divisors, whose sum is σ = 64763850. Its totient is φ = 64763848.

The previous prime is 64763843. The next prime is 64763869. The reversal of 64763849 is 94836746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 17909824 = 6845^2 + 4232^2 .

It is a cyclic number.

It is not a de Polignac number, because 64763849 - 2⁸ = 64763593 is a prime.

It is a super-2 number, since 2×64763849² = 8388712274589602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64763843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32381924 + 32381925.

It is an arithmetic number, because the mean of its divisors is an integer number (32381925).

Almost surely, 2^64763849 is an apocalyptic number.

It is an amenable number.

64763849 is a deficient number, since it is larger than the sum of its proper divisors (1).

64763849 is an equidigital number, since it uses as much as digits as its factorization.

64763849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 47.

The square root of 64763849 is about 8047.5989586957. The cubic root of 64763849 is about 401.5850627271.

The spelling of 64763849 in words is "sixty-four million, seven hundred sixty-three thousand, eight hundred forty-nine".