64146213 has 6 divisors (see below), whose sum is σ = 92655654. Its totient is φ = 42764136.

The previous prime is 64146193. The next prime is 64146227. The reversal of 64146213 is 31264146.

64146213 is a `hidden beast` number, since 641 + 4 + 6 + 2 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56295009 + 7851204 = 7503^2 + 2802^2 .

It is not a de Polignac number, because 64146213 - 2¹⁰ = 64145189 is a prime.

It is a super-2 number, since 2×64146213² = 8229473284482738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64146233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3563670 + ... + 3563687.

It is an arithmetic number, because the mean of its divisors is an integer number (15442609).

Almost surely, 2^64146213 is an apocalyptic number.

It is an amenable number.

64146213 is a deficient number, since it is larger than the sum of its proper divisors (28509441).

64146213 is a wasteful number, since it uses less digits than its factorization.

64146213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7127363 (or 7127360 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 64146213 is about 8009.1330991562. The cubic root of 64146213 is about 400.3043787419.

The spelling of 64146213 in words is "sixty-four million, one hundred forty-six thousand, two hundred thirteen".