64983397 has 4 divisors (see below), whose sum is σ = 64999936. Its totient is φ = 64966860.

The previous prime is 64983379. The next prime is 64983407. The reversal of 64983397 is 79338946.

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 64983397 - 2¹⁵ = 64950629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64983397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64983497) 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, 1372 + ... + 11482.

It is an arithmetic number, because the mean of its divisors is an integer number (16249984).

Almost surely, 2^64983397 is an apocalyptic number.

It is an amenable number.

64983397 is a deficient number, since it is larger than the sum of its proper divisors (16539).

64983397 is a wasteful number, since it uses less digits than its factorization.

64983397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16538.

The product of its digits is 979776, while the sum is 49.

The square root of 64983397 is about 8061.2280081883. The cubic root of 64983397 is about 402.0383390412.

The spelling of 64983397 in words is "sixty-four million, nine hundred eighty-three thousand, three hundred ninety-seven".