65442445 has 8 divisors (see below), whose sum is σ = 79309080. Its totient is φ = 51835200.

The previous prime is 65442427. The next prime is 65442463. The reversal of 65442445 is 54424456.

It is an interprime number because it is at equal distance from previous prime (65442427) and next prime (65442463).

It can be written as a sum of positive squares in 4 ways, for example, as 13645636 + 51796809 = 3694^2 + 7197^2 .

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

It is not a de Polignac number, because 65442445 - 2⁵ = 65442413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65442445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64290 + ... + 65299.

It is an arithmetic number, because the mean of its divisors is an integer number (9913635).

Almost surely, 2^65442445 is an apocalyptic number.

It is an amenable number.

65442445 is a deficient number, since it is larger than the sum of its proper divisors (13866635).

65442445 is a wasteful number, since it uses less digits than its factorization.

65442445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129695.

The product of its digits is 76800, while the sum is 34.

The square root of 65442445 is about 8089.6504868876. The cubic root of 65442445 is about 402.9827957855.

The spelling of 65442445 in words is "sixty-five million, four hundred forty-two thousand, four hundred forty-five".