64673753 has 4 divisors (see below), whose sum is σ = 65102208. Its totient is φ = 64245300.

The previous prime is 64673747. The next prime is 64673761. The reversal of 64673753 is 35737646.

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 64673753 - 2⁴ = 64673737 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 64673753.

It is not an unprimeable number, because it can be changed into a prime (64673053) 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, 214001 + ... + 214302.

It is an arithmetic number, because the mean of its divisors is an integer number (16275552).

Almost surely, 2^64673753 is an apocalyptic number.

It is an amenable number.

64673753 is a deficient number, since it is larger than the sum of its proper divisors (428455).

64673753 is a wasteful number, since it uses less digits than its factorization.

64673753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428454.

The product of its digits is 317520, while the sum is 41.

The square root of 64673753 is about 8041.9993160905. Note that the first 3 decimals coincide. The cubic root of 64673753 is about 401.3987550924.

The spelling of 64673753 in words is "sixty-four million, six hundred seventy-three thousand, seven hundred fifty-three".