66362540 has 24 divisors (see below), whose sum is σ = 139914432. Its totient is φ = 26439680.

The previous prime is 66362539. The next prime is 66362561. The reversal of 66362540 is 4526366.

It is a junction number, because it is equal to n+sod(n) for n = 66362497 and 66362506.

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, 1316 + ... + 11595.

It is an arithmetic number, because the mean of its divisors is an integer number (5829768).

Almost surely, 2^66362540 is an apocalyptic number.

It is an amenable number.

66362540 is an abundant number, since it is smaller than the sum of its proper divisors (73551892).

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

66362540 is a wasteful number, since it uses less digits than its factorization.

66362540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13177 (or 13175 counting only the distinct ones).

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

The square root of 66362540 is about 8146.3206418603. The cubic root of 66362540 is about 404.8626064463.

The spelling of 66362540 in words is "sixty-six million, three hundred sixty-two thousand, five hundred forty".