64021683 has 16 divisors (see below), whose sum is σ = 93600000. Its totient is φ = 38602080.

The previous prime is 64021681. The next prime is 64021687. The reversal of 64021683 is 38612046.

It is not a de Polignac number, because 64021683 - 2¹ = 64021681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64021683.

It is not an unprimeable number, because it can be changed into a prime (64021681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1693 + ... + 11441.

It is an arithmetic number, because the mean of its divisors is an integer number (5850000).

Almost surely, 2^64021683 is an apocalyptic number.

64021683 is a deficient number, since it is larger than the sum of its proper divisors (29578317).

64021683 is a wasteful number, since it uses less digits than its factorization.

64021683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9962.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 64021683 is about 8001.3550727361. The cubic root of 64021683 is about 400.0451678161.

The spelling of 64021683 in words is "sixty-four million, twenty-one thousand, six hundred eighty-three".