64416493 has 8 divisors (see below), whose sum is σ = 65185560. Its totient is φ = 63650880.

The previous prime is 64416467. The next prime is 64416503. The reversal of 64416493 is 39461446.

It can be written as a sum of positive squares in 4 ways, for example, as 6853924 + 57562569 = 2618^2 + 7587^2 .

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 64416493 - 2¹⁷ = 64285421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64416293) 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, 60183 + ... + 61243.

It is an arithmetic number, because the mean of its divisors is an integer number (8148195).

Almost surely, 2^64416493 is an apocalyptic number.

It is an amenable number.

64416493 is a deficient number, since it is larger than the sum of its proper divisors (769067).

64416493 is a wasteful number, since it uses less digits than its factorization.

64416493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727.

The product of its digits is 62208, while the sum is 37.

The square root of 64416493 is about 8025.9885995434. The cubic root of 64416493 is about 400.8658182945.

The spelling of 64416493 in words is "sixty-four million, four hundred sixteen thousand, four hundred ninety-three".