64763667 has 6 divisors (see below), whose sum is σ = 93547532. Its totient is φ = 43175772.

The previous prime is 64763623. The next prime is 64763669. The reversal of 64763667 is 76636746.

64763667 is a `hidden beast` number, since 6 + 4 + 7 + 636 + 6 + 7 = 666.

It is not a de Polignac number, because 64763667 - 2⁸ = 64763411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64763669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3597973 + ... + 3597990.

Almost surely, 2^64763667 is an apocalyptic number.

64763667 is a deficient number, since it is larger than the sum of its proper divisors (28783865).

64763667 is a wasteful number, since it uses less digits than its factorization.

64763667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195969 (or 7195966 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 64763667 is about 8047.5876509672. The cubic root of 64763667 is about 401.5846865474.

The spelling of 64763667 in words is "sixty-four million, seven hundred sixty-three thousand, six hundred sixty-seven".