64349388 has 36 divisors (see below), whose sum is σ = 165333168. Its totient is φ = 21097440.

The previous prime is 64349387. The next prime is 64349393. The reversal of 64349388 is 88394346.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (64349381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12456 + ... + 16847.

It is an arithmetic number, because the mean of its divisors is an integer number (4592588).

Almost surely, 2^64349388 is an apocalyptic number.

It is an amenable number.

64349388 is an abundant number, since it is smaller than the sum of its proper divisors (100983780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64349388 is a wasteful number, since it uses less digits than its factorization.

64349388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29374 (or 29369 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 64349388 is about 8021.8070283447. The cubic root of 64349388 is about 400.7265711037.

The spelling of 64349388 in words is "sixty-four million, three hundred forty-nine thousand, three hundred eighty-eight".