64138063 has 16 divisors (see below), whose sum is σ = 72721152. Its totient is φ = 56056000.

The previous prime is 64138051. The next prime is 64138079. The reversal of 64138063 is 36083146.

It is not a de Polignac number, because 64138063 - 2⁵ = 64138031 is a prime.

It is a super-2 number, since 2×64138063² = 8227382250783938, 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 (64138043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31020 + ... + 33022.

It is an arithmetic number, because the mean of its divisors is an integer number (4545072).

Almost surely, 2^64138063 is an apocalyptic number.

64138063 is a deficient number, since it is larger than the sum of its proper divisors (8583089).

64138063 is a wasteful number, since it uses less digits than its factorization.

64138063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 64138063 is about 8008.6242888526. The cubic root of 64138063 is about 400.2874246682.

The spelling of 64138063 in words is "sixty-four million, one hundred thirty-eight thousand, sixty-three".