64784090 has 16 divisors (see below), whose sum is σ = 133270272. Its totient is φ = 22211664.

The previous prime is 64784081. The next prime is 64784107. The reversal of 64784090 is 9048746.

It is a happy number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462674 + ... + 462813.

It is an arithmetic number, because the mean of its divisors is an integer number (8329392).

Almost surely, 2^64784090 is an apocalyptic number.

64784090 is an abundant number, since it is smaller than the sum of its proper divisors (68486182).

64784090 is a wasteful number, since it uses less digits than its factorization.

64784090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925501.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 64784090 is about 8048.8564405138. The cubic root of 64784090 is about 401.6268948949.

The spelling of 64784090 in words is "sixty-four million, seven hundred eighty-four thousand, ninety".