66060265 has 4 divisors (see below), whose sum is σ = 79272324. Its totient is φ = 52848208.

The previous prime is 66060259. The next prime is 66060271. The reversal of 66060265 is 56206066.

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

It is an interprime number because it is at equal distance from previous prime (66060259) and next prime (66060271).

It can be written as a sum of positive squares in 2 ways, for example, as 17952169 + 48108096 = 4237^2 + 6936^2 .

It is a cyclic number.

It is not a de Polignac number, because 66060265 - 2³ = 66060257 is a prime.

It is a super-2 number, since 2×66060265² = 8727917223740450, which contains 22 as substring.

It is a Duffinian 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, 6606022 + ... + 6606031.

It is an arithmetic number, because the mean of its divisors is an integer number (19818081).

Almost surely, 2^66060265 is an apocalyptic number.

It is an amenable number.

66060265 is a deficient number, since it is larger than the sum of its proper divisors (13212059).

66060265 is a wasteful number, since it uses less digits than its factorization.

66060265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13212058.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66060265 is about 8127.7466126842. The cubic root of 66060265 is about 404.2469673349.

The spelling of 66060265 in words is "sixty-six million, sixty thousand, two hundred sixty-five".