64290091 has 8 divisors (see below), whose sum is σ = 69325200. Its totient is φ = 59420160.

The previous prime is 64290089. The next prime is 64290119. The reversal of 64290091 is 19009246.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64290091 - 2¹ = 64290089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64290011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40486 + ... + 42043.

It is an arithmetic number, because the mean of its divisors is an integer number (8665650).

Almost surely, 2^64290091 is an apocalyptic number.

64290091 is a deficient number, since it is larger than the sum of its proper divisors (5035109).

64290091 is a wasteful number, since it uses less digits than its factorization.

64290091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82589.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 64290091 is about 8018.1101888163. The cubic root of 64290091 is about 400.6034454262.

The spelling of 64290091 in words is "sixty-four million, two hundred ninety thousand, ninety-one".