64461613 has 4 divisors (see below), whose sum is σ = 64479168. Its totient is φ = 64444060.

The previous prime is 64461611. The next prime is 64461629. The reversal of 64461613 is 31616446.

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 not a de Polignac number, because 64461613 - 2¹ = 64461611 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 (64461611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931 + ... + 11392.

It is an arithmetic number, because the mean of its divisors is an integer number (16119792).

Almost surely, 2^64461613 is an apocalyptic number.

It is an amenable number.

64461613 is a deficient number, since it is larger than the sum of its proper divisors (17555).

64461613 is a wasteful number, since it uses less digits than its factorization.

64461613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17554.

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

The square root of 64461613 is about 8028.7989761857. The cubic root of 64461613 is about 400.9593908334.

The spelling of 64461613 in words is "sixty-four million, four hundred sixty-one thousand, six hundred thirteen".