64001893 has 4 divisors (see below), whose sum is σ = 66784608. Its totient is φ = 61219180.

The previous prime is 64001891. The next prime is 64001909. The reversal of 64001893 is 39810046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39810046 = 2 ⋅19905023.

It is a cyclic number.

It is not a de Polignac number, because 64001893 - 2¹ = 64001891 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 (64001891) 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, 1391323 + ... + 1391368.

It is an arithmetic number, because the mean of its divisors is an integer number (16696152).

Almost surely, 2^64001893 is an apocalyptic number.

It is an amenable number.

64001893 is a deficient number, since it is larger than the sum of its proper divisors (2782715).

64001893 is a wasteful number, since it uses less digits than its factorization.

64001893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782714.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 64001893 is about 8000.1183116251. The cubic root of 64001893 is about 400.0039437111.

The spelling of 64001893 in words is "sixty-four million, one thousand, eight hundred ninety-three".