64747613 has 8 divisors (see below), whose sum is σ = 74209728. Its totient is φ = 55338624.

The previous prime is 64747583. The next prime is 64747619. The reversal of 64747613 is 31674746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64747613 - 2⁶ = 64747549 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 (64747619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10631 + ... + 15572.

It is an arithmetic number, because the mean of its divisors is an integer number (9276216).

Almost surely, 2^64747613 is an apocalyptic number.

It is an amenable number.

64747613 is a deficient number, since it is larger than the sum of its proper divisors (9462115).

64747613 is a wasteful number, since it uses less digits than its factorization.

64747613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26563.

The product of its digits is 84672, while the sum is 38.

The square root of 64747613 is about 8046.5901473854. The cubic root of 64747613 is about 401.5515014111.

The spelling of 64747613 in words is "sixty-four million, seven hundred forty-seven thousand, six hundred thirteen".