64126493 has 8 divisors (see below), whose sum is σ = 64848888. Its totient is φ = 63408384.

The previous prime is 64126477. The next prime is 64126519. The reversal of 64126493 is 39462146.

It can be written as a sum of positive squares in 4 ways, for example, as 2079364 + 62047129 = 1442^2 + 7877^2 .

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 64126493 - 2⁴ = 64126477 is a prime.

It is a super-2 number, since 2×64126493² = 8224414208958098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64126423) 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, 35705 + ... + 37457.

It is an arithmetic number, because the mean of its divisors is an integer number (8106111).

Almost surely, 2^64126493 is an apocalyptic number.

It is an amenable number.

64126493 is a deficient number, since it is larger than the sum of its proper divisors (722395).

64126493 is a wasteful number, since it uses less digits than its factorization.

64126493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143.

The product of its digits is 31104, while the sum is 35.

The square root of 64126493 is about 8007.9019099887. The cubic root of 64126493 is about 400.2633536574.

The spelling of 64126493 in words is "sixty-four million, one hundred twenty-six thousand, four hundred ninety-three".