64813340 has 12 divisors (see below), whose sum is σ = 136108056. Its totient is φ = 25925328.

The previous prime is 64813339. The next prime is 64813387. The reversal of 64813340 is 4331846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620314 + ... + 1620353.

It is an arithmetic number, because the mean of its divisors is an integer number (11342338).

Almost surely, 2^64813340 is an apocalyptic number.

It is an amenable number.

64813340 is an abundant number, since it is smaller than the sum of its proper divisors (71294716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64813340 is a wasteful number, since it uses less digits than its factorization.

64813340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240676 (or 3240674 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 64813340 is about 8050.6732637712. The cubic root of 64813340 is about 401.6873306136.

The spelling of 64813340 in words is "sixty-four million, eight hundred thirteen thousand, three hundred forty".