64780011 has 6 divisors (see below), whose sum is σ = 93571140. Its totient is φ = 43186668.

The previous prime is 64780003. The next prime is 64780019. The reversal of 64780011 is 11008746.

It is a happy number.

64780011 is a `hidden beast` number, since 647 + 8 + 0 + 0 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (64780003) and next prime (64780019).

It is not a de Polignac number, because 64780011 - 2³ = 64780003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64780019) 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, 3598881 + ... + 3598898.

It is an arithmetic number, because the mean of its divisors is an integer number (15595190).

Almost surely, 2^64780011 is an apocalyptic number.

64780011 is a deficient number, since it is larger than the sum of its proper divisors (28791129).

64780011 is a wasteful number, since it uses less digits than its factorization.

64780011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7197785 (or 7197782 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 64780011 is about 8048.6030464920. The cubic root of 64780011 is about 401.6184655080.

Adding to 64780011 its reverse (11008746), we get a palindrome (75788757).

The spelling of 64780011 in words is "sixty-four million, seven hundred eighty thousand, eleven".