64947051 has 24 divisors (see below), whose sum is σ = 101359440. Its totient is φ = 39836736.

The previous prime is 64947041. The next prime is 64947059. The reversal of 64947051 is 15074946.

64947051 is a `hidden beast` number, since 649 + 4 + 7 + 0 + 5 + 1 = 666.

It is not a de Polignac number, because 64947051 - 2¹⁰ = 64946027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64946997 and 64947015.

It is not an unprimeable number, because it can be changed into a prime (64947059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44800 + ... + 46226.

It is an arithmetic number, because the mean of its divisors is an integer number (4223310).

Almost surely, 2^64947051 is an apocalyptic number.

64947051 is a deficient number, since it is larger than the sum of its proper divisors (36412389).

64947051 is a wasteful number, since it uses less digits than its factorization.

64947051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835 (or 1832 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 64947051 is about 8058.9733217079. The cubic root of 64947051 is about 401.9633700938.

The spelling of 64947051 in words is "sixty-four million, nine hundred forty-seven thousand, fifty-one".