64122273 has 20 divisors (see below), whose sum is σ = 96534768. Its totient is φ = 42414840.

The previous prime is 64122269. The next prime is 64122281. The reversal of 64122273 is 37222146.

It is not a de Polignac number, because 64122273 - 2² = 64122269 is a prime.

It is a super-2 number, since 2×64122273² = 8223331789373058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (64122263) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7590 + ... + 13632.

Almost surely, 2^64122273 is an apocalyptic number.

It is an amenable number.

64122273 is a deficient number, since it is larger than the sum of its proper divisors (32412495).

64122273 is a wasteful number, since it uses less digits than its factorization.

64122273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186 (or 6177 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 64122273 is about 8007.6384159126. The cubic root of 64122273 is about 400.2545733633.

The spelling of 64122273 in words is "sixty-four million, one hundred twenty-two thousand, two hundred seventy-three".