63964845 has 36 divisors (see below), whose sum is σ = 128978460. Its totient is φ = 29240064.

The previous prime is 63964843. The next prime is 63964867. The reversal of 63964845 is 54846936.

63964845 is a `hidden beast` number, since 639 + 6 + 4 + 8 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14768649 + 49196196 = 3843^2 + 7014^2 .

It is not a de Polignac number, because 63964845 - 2¹ = 63964843 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 63964845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63964843) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12300 + ... + 16709.

It is an arithmetic number, because the mean of its divisors is an integer number (3582735).

Almost surely, 2^63964845 is an apocalyptic number.

It is an amenable number.

63964845 is an abundant number, since it is smaller than the sum of its proper divisors (65013615).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63964845 is a wasteful number, since it uses less digits than its factorization.

63964845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29034 (or 29024 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 63964845 is about 7997.8025106900. The cubic root of 63964845 is about 399.9267470025.

The spelling of 63964845 in words is "sixty-three million, nine hundred sixty-four thousand, eight hundred forty-five".