64138201 has 4 divisors (see below), whose sum is σ = 64332304. Its totient is φ = 63944100.

The previous prime is 64138189. The next prime is 64138211. The reversal of 64138201 is 10283146.

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: 10283146 = 2 ⋅5141573.

It is a cyclic number.

It is not a de Polignac number, because 64138201 - 2²³ = 55749593 is a prime.

It is a super-2 number, since 2×64138201² = 8227417655032802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64138211) 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, 96555 + ... + 97216.

It is an arithmetic number, because the mean of its divisors is an integer number (16083076).

Almost surely, 2^64138201 is an apocalyptic number.

It is an amenable number.

64138201 is a deficient number, since it is larger than the sum of its proper divisors (194103).

64138201 is a wasteful number, since it uses less digits than its factorization.

64138201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194102.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 64138201 is about 8008.6329045599. The cubic root of 64138201 is about 400.2877117552.

The spelling of 64138201 in words is "sixty-four million, one hundred thirty-eight thousand, two hundred one".