64807493 has 8 divisors (see below), whose sum is σ = 66457248. Its totient is φ = 63164304.

The previous prime is 64807481. The next prime is 64807517. The reversal of 64807493 is 39470846.

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

It is a cyclic number.

It is not a de Polignac number, because 64807493 - 2¹⁴ = 64791109 is a prime.

It is a super-2 number, since 2×64807493² = 8400022297890098, which contains 22 as substring.

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 64807493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64807793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22871 + ... + 25547.

It is an arithmetic number, because the mean of its divisors is an integer number (8307156).

Almost surely, 2^64807493 is an apocalyptic number.

It is an amenable number.

64807493 is a deficient number, since it is larger than the sum of its proper divisors (1649755).

64807493 is a wasteful number, since it uses less digits than its factorization.

64807493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 64807493 is about 8050.3101182501. The cubic root of 64807493 is about 401.6752511227.

The spelling of 64807493 in words is "sixty-four million, eight hundred seven thousand, four hundred ninety-three".