64340983 has 4 divisors (see below), whose sum is σ = 73532560. Its totient is φ = 55149408.

The previous prime is 64340963. The next prime is 64340987. The reversal of 64340983 is 38904346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64340983 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 (64340987) 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, 4595778 + ... + 4595791.

It is an arithmetic number, because the mean of its divisors is an integer number (18383140).

Almost surely, 2^64340983 is an apocalyptic number.

64340983 is a deficient number, since it is larger than the sum of its proper divisors (9191577).

64340983 is an equidigital number, since it uses as much as digits as its factorization.

64340983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191576.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 64340983 is about 8021.2831267821. The cubic root of 64340983 is about 400.7091233672.

The spelling of 64340983 in words is "sixty-four million, three hundred forty thousand, nine hundred eighty-three".