64747814 has 4 divisors (see below), whose sum is σ = 97121724. Its totient is φ = 32373906.

The previous prime is 64747703. The next prime is 64747819. The reversal of 64747814 is 41874746.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64747819) 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 as a sum of consecutive naturals, namely, 16186952 + ... + 16186955.

It is an arithmetic number, because the mean of its divisors is an integer number (24280431).

Almost surely, 2^64747814 is an apocalyptic number.

64747814 is a deficient number, since it is larger than the sum of its proper divisors (32373910).

64747814 is a wasteful number, since it uses less digits than its factorization.

64747814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32373909.

The product of its digits is 150528, while the sum is 41.

The square root of 64747814 is about 8046.6026371382. The cubic root of 64747814 is about 401.5519169310.

The spelling of 64747814 in words is "sixty-four million, seven hundred forty-seven thousand, eight hundred fourteen".