64074691 has 4 divisors (see below), whose sum is σ = 64535800. Its totient is φ = 63613584.

The previous prime is 64074671. The next prime is 64074697. The reversal of 64074691 is 19647046.

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

It is a cyclic number.

It is not a de Polignac number, because 64074691 - 2¹⁷ = 63943619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64074691.

It is not an unprimeable number, because it can be changed into a prime (64074697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230346 + ... + 230623.

It is an arithmetic number, because the mean of its divisors is an integer number (16133950).

Almost surely, 2^64074691 is an apocalyptic number.

64074691 is a deficient number, since it is larger than the sum of its proper divisors (461109).

64074691 is a wasteful number, since it uses less digits than its factorization.

64074691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461108.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 64074691 is about 8004.6668262958. Note that the first 3 decimals coincide. The cubic root of 64074691 is about 400.1555457560.

The spelling of 64074691 in words is "sixty-four million, seventy-four thousand, six hundred ninety-one".