66292061 has 16 divisors (see below), whose sum is σ = 77666688. Its totient is φ = 55910400.

The previous prime is 66292033. The next prime is 66292087. The reversal of 66292061 is 16029266.

It is a cyclic number.

It is not a de Polignac number, because 66292061 - 2⁶ = 66291997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66292021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10781 + ... + 15773.

It is an arithmetic number, because the mean of its divisors is an integer number (4854168).

Almost surely, 2^66292061 is an apocalyptic number.

It is an amenable number.

66292061 is a deficient number, since it is larger than the sum of its proper divisors (11374627).

66292061 is a wasteful number, since it uses less digits than its factorization.

66292061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 66292061 is about 8141.9936747703. The cubic root of 66292061 is about 404.7192302834.

The spelling of 66292061 in words is "sixty-six million, two hundred ninety-two thousand, sixty-one".