66300642 has 24 divisors (see below), whose sum is σ = 145077660. Its totient is φ = 21880800.

The previous prime is 66300623. The next prime is 66300643. The reversal of 66300642 is 24600366.

It can be written as a sum of positive squares in 2 ways, for example, as 63345681 + 2954961 = 7959^2 + 1719^2 .

It is a super-2 number, since 2×66300642² = 8791550259224328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66300643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16417 + ... + 20052.

Almost surely, 2^66300642 is an apocalyptic number.

66300642 is an abundant number, since it is smaller than the sum of its proper divisors (78777018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66300642 is a wasteful number, since it uses less digits than its factorization.

66300642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36578 (or 36575 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 66300642 is about 8142.5206171062. The cubic root of 66300642 is about 404.7366921324.

The spelling of 66300642 in words is "sixty-six million, three hundred thousand, six hundred forty-two".