66263045 has 4 divisors (see below), whose sum is σ = 79515660. Its totient is φ = 53010432.

The previous prime is 66263017. The next prime is 66263053. The reversal of 66263045 is 54036266.

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 39212644 + 27050401 = 6262^2 + 5201^2 .

It is a cyclic number.

It is not a de Polignac number, because 66263045 - 2¹² = 66258949 is a prime.

It is a super-2 number, since 2×66263045² = 8781582265344050, which contains 22 as substring.

It is a Curzon number.

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, 6626300 + ... + 6626309.

It is an arithmetic number, because the mean of its divisors is an integer number (19878915).

Almost surely, 2^66263045 is an apocalyptic number.

It is an amenable number.

66263045 is a deficient number, since it is larger than the sum of its proper divisors (13252615).

66263045 is a wasteful number, since it uses less digits than its factorization.

66263045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13252614.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 66263045 is about 8140.2116065862. The cubic root of 66263045 is about 404.6601732019.

The spelling of 66263045 in words is "sixty-six million, two hundred sixty-three thousand, forty-five".