65422643 has 32 divisors (see below), whose sum is σ = 81984000. Its totient is φ = 51749280.

The previous prime is 65422639. The next prime is 65422661. The reversal of 65422643 is 34622456.

It is not a de Polignac number, because 65422643 - 2² = 65422639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65422633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328658 + ... + 328856.

It is an arithmetic number, because the mean of its divisors is an integer number (2562000).

Almost surely, 2^65422643 is an apocalyptic number.

65422643 is a deficient number, since it is larger than the sum of its proper divisors (16561357).

65422643 is a wasteful number, since it uses less digits than its factorization.

65422643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 242 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 65422643 is about 8088.4264847991. The cubic root of 65422643 is about 402.9421459680.

The spelling of 65422643 in words is "sixty-five million, four hundred twenty-two thousand, six hundred forty-three".