64601493 has 8 divisors (see below), whose sum is σ = 93965856. Its totient is φ = 39152400.

The previous prime is 64601491. The next prime is 64601507. The reversal of 64601493 is 39410646.

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

It is not a de Polignac number, because 64601493 - 2¹ = 64601491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1957621 = 64601493 / (6 + 4 + 6 + 0 + 1 + 4 + 9 + 3).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64601491) 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 in 7 ways as a sum of consecutive naturals, for example, 978778 + ... + 978843.

It is an arithmetic number, because the mean of its divisors is an integer number (11745732).

Almost surely, 2^64601493 is an apocalyptic number.

It is an amenable number.

64601493 is a deficient number, since it is larger than the sum of its proper divisors (29364363).

64601493 is a wasteful number, since it uses less digits than its factorization.

64601493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957635.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 64601493 is about 8037.5053965767. The cubic root of 64601493 is about 401.2492050721.

The spelling of 64601493 in words is "sixty-four million, six hundred one thousand, four hundred ninety-three".