64146013 has 4 divisors (see below), whose sum is σ = 64482048. Its totient is φ = 63809980.

The previous prime is 64146007. The next prime is 64146029. The reversal of 64146013 is 31064146.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64146013 is a prime.

It is a super-2 number, since 2×64146013² = 8229421967592338, 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 (64146053) 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, 167731 + ... + 168112.

It is an arithmetic number, because the mean of its divisors is an integer number (16120512).

Almost surely, 2^64146013 is an apocalyptic number.

It is an amenable number.

64146013 is a deficient number, since it is larger than the sum of its proper divisors (336035).

64146013 is a wasteful number, since it uses less digits than its factorization.

64146013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336034.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 64146013 is about 8009.1206134007. The cubic root of 64146013 is about 400.3039627082.

The spelling of 64146013 in words is "sixty-four million, one hundred forty-six thousand, thirteen".