64909742 has 8 divisors (see below), whose sum is σ = 97794216. Its totient is φ = 32311672.

The previous prime is 64909717. The next prime is 64909751. The reversal of 64909742 is 24790946.

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

It is a zygodrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 64909742.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 71033 + ... + 71940.

It is an arithmetic number, because the mean of its divisors is an integer number (12224277).

Almost surely, 2^64909742 is an apocalyptic number.

64909742 is a deficient number, since it is larger than the sum of its proper divisors (32884474).

64909742 is a wasteful number, since it uses less digits than its factorization.

64909742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143202.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 64909742 is about 8056.6582402383. The cubic root of 64909742 is about 401.8863857210.

The spelling of 64909742 in words is "sixty-four million, nine hundred nine thousand, seven hundred forty-two".