66294445 has 8 divisors (see below), whose sum is σ = 90918144. Its totient is φ = 45459024.

The previous prime is 66294427. The next prime is 66294451. The reversal of 66294445 is 54449266.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66294445 - 2⁹ = 66293933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66294398 and 66294407.

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, 947029 + ... + 947098.

It is an arithmetic number, because the mean of its divisors is an integer number (11364768).

Almost surely, 2^66294445 is an apocalyptic number.

It is an amenable number.

66294445 is a deficient number, since it is larger than the sum of its proper divisors (24623699).

66294445 is a wasteful number, since it uses less digits than its factorization.

66294445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894139.

The product of its digits is 207360, while the sum is 40.

The square root of 66294445 is about 8142.1400749434. The cubic root of 66294445 is about 404.7240817395.

The spelling of 66294445 in words is "sixty-six million, two hundred ninety-four thousand, four hundred forty-five".