66062261 has 8 divisors (see below), whose sum is σ = 68436480. Its totient is φ = 63694512.

The previous prime is 66062251. The next prime is 66062263. The reversal of 66062261 is 16226066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66062261 - 2¹⁸ = 65800117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66062263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29756 + ... + 31898.

It is an arithmetic number, because the mean of its divisors is an integer number (8554560).

Almost surely, 2^66062261 is an apocalyptic number.

It is an amenable number.

66062261 is a deficient number, since it is larger than the sum of its proper divisors (2374219).

66062261 is a wasteful number, since it uses less digits than its factorization.

66062261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 66062261 is about 8127.8694010177. The cubic root of 66062261 is about 404.2510387123.

The spelling of 66062261 in words is "sixty-six million, sixty-two thousand, two hundred sixty-one".