64680367 has 4 divisors (see below), whose sum is σ = 64710360. Its totient is φ = 64650376.

The previous prime is 64680349. The next prime is 64680437. The reversal of 64680367 is 76308646.

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

It is a cyclic number.

It is not a de Polignac number, because 64680367 - 2¹⁵ = 64647599 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64680307) 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, 11488 + ... + 16165.

It is an arithmetic number, because the mean of its divisors is an integer number (16177590).

Almost surely, 2^64680367 is an apocalyptic number.

64680367 is a deficient number, since it is larger than the sum of its proper divisors (29993).

64680367 is a wasteful number, since it uses less digits than its factorization.

64680367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29992.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 64680367 is about 8042.4105217279. The cubic root of 64680367 is about 401.4124379274.

The spelling of 64680367 in words is "sixty-four million, six hundred eighty thousand, three hundred sixty-seven".