66513050 has 48 divisors (see below), whose sum is σ = 128425560. Its totient is φ = 25608960.

The previous prime is 66513049. The next prime is 66513059. The reversal of 66513050 is 5031566.

It can be written as a sum of positive squares in 12 ways, for example, as 23203489 + 43309561 = 4817^2 + 6581^2 .

It is not an unprimeable number, because it can be changed into a prime (66513059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290336 + ... + 290564.

Almost surely, 2^66513050 is an apocalyptic number.

66513050 is a deficient number, since it is larger than the sum of its proper divisors (61912510).

66513050 is a wasteful number, since it uses less digits than its factorization.

66513050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 66513050 is about 8155.5533227366. The cubic root of 66513050 is about 405.1684509855.

The spelling of 66513050 in words is "sixty-six million, five hundred thirteen thousand, fifty".