64283687 has 4 divisors (see below), whose sum is σ = 69228600. Its totient is φ = 59338776.

The previous prime is 64283671. The next prime is 64283693. The reversal of 64283687 is 78638246.

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 64283687 - 2⁴ = 64283671 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 (64283657) 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, 2472437 + ... + 2472462.

It is an arithmetic number, because the mean of its divisors is an integer number (17307150).

Almost surely, 2^64283687 is an apocalyptic number.

64283687 is a deficient number, since it is larger than the sum of its proper divisors (4944913).

64283687 is a wasteful number, since it uses less digits than its factorization.

64283687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944912.

The product of its digits is 387072, while the sum is 44.

The square root of 64283687 is about 8017.7108328999. The cubic root of 64283687 is about 400.5901434818.

The spelling of 64283687 in words is "sixty-four million, two hundred eighty-three thousand, six hundred eighty-seven".