64289091 has 16 divisors (see below), whose sum is σ = 89915904. Its totient is φ = 40810464.

The previous prime is 64289089. The next prime is 64289111. The reversal of 64289091 is 19098246.

It is not a de Polignac number, because 64289091 - 2¹ = 64289089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64289011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945 + ... + 11378.

It is an arithmetic number, because the mean of its divisors is an integer number (5619744).

Almost surely, 2^64289091 is an apocalyptic number.

64289091 is a deficient number, since it is larger than the sum of its proper divisors (25626813).

64289091 is a wasteful number, since it uses less digits than its factorization.

64289091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12410.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 64289091 is about 8018.0478297401. The cubic root of 64289091 is about 400.6013683538.

The spelling of 64289091 in words is "sixty-four million, two hundred eighty-nine thousand, ninety-one".