64670253 has 8 divisors (see below), whose sum is σ = 86272416. Its totient is φ = 43090800.

The previous prime is 64670251. The next prime is 64670267. The reversal of 64670253 is 35207646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64670253 - 2¹ = 64670251 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64670251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2763 + ... + 11703.

It is an arithmetic number, because the mean of its divisors is an integer number (10784052).

Almost surely, 2^64670253 is an apocalyptic number.

It is an amenable number.

64670253 is a deficient number, since it is larger than the sum of its proper divisors (21602163).

64670253 is a wasteful number, since it uses less digits than its factorization.

64670253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11355.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 64670253 is about 8041.7817055675. The cubic root of 64670253 is about 401.3915140251.

Adding to 64670253 its reverse (35207646), we get a palindrome (99877899).

The spelling of 64670253 in words is "sixty-four million, six hundred seventy thousand, two hundred fifty-three".