64622146 has 8 divisors (see below), whose sum is σ = 97061580. Its totient is φ = 32268288.

The previous prime is 64622113. The next prime is 64622147. The reversal of 64622146 is 64122646.

It can be written as a sum of positive squares in 2 ways, for example, as 60233121 + 4389025 = 7761^2 + 2095^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64622147) 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, 19471 + ... + 22546.

Almost surely, 2^64622146 is an apocalyptic number.

64622146 is a deficient number, since it is larger than the sum of its proper divisors (32439434).

64622146 is a wasteful number, since it uses less digits than its factorization.

64622146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42788.

The product of its digits is 13824, while the sum is 31.

The square root of 64622146 is about 8038.7900830909. The cubic root of 64622146 is about 401.2919601050.

Subtracting from 64622146 its reverse (64122646), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 64622146 in words is "sixty-four million, six hundred twenty-two thousand, one hundred forty-six".