65422645 has 4 divisors (see below), whose sum is σ = 78507180. Its totient is φ = 52338112.

The previous prime is 65422639. The next prime is 65422661. The reversal of 65422645 is 54622456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12103441 + 53319204 = 3479^2 + 7302^2 .

It is a cyclic number.

It is not a de Polignac number, because 65422645 - 2⁷ = 65422517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65422645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6542260 + ... + 6542269.

It is an arithmetic number, because the mean of its divisors is an integer number (19626795).

Almost surely, 2^65422645 is an apocalyptic number.

It is an amenable number.

65422645 is a deficient number, since it is larger than the sum of its proper divisors (13084535).

65422645 is a wasteful number, since it uses less digits than its factorization.

65422645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13084534.

The product of its digits is 57600, while the sum is 34.

The square root of 65422645 is about 8088.4266084326. The cubic root of 65422645 is about 402.9421500741.

The spelling of 65422645 in words is "sixty-five million, four hundred twenty-two thousand, six hundred forty-five".