66002623 has 8 divisors (see below), whose sum is σ = 66502688. Its totient is φ = 65505024.

The previous prime is 66002611. The next prime is 66002633. The reversal of 66002623 is 32620066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66002623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66002603) 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, 135286 + ... + 135772.

It is an arithmetic number, because the mean of its divisors is an integer number (8312836).

Almost surely, 2^66002623 is an apocalyptic number.

66002623 is a deficient number, since it is larger than the sum of its proper divisors (500065).

66002623 is a wasteful number, since it uses less digits than its factorization.

66002623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 66002623 is about 8124.1998375225. The cubic root of 66002623 is about 404.1293556138.

Adding to 66002623 its reverse (32620066), we get a palindrome (98622689).

The spelling of 66002623 in words is "sixty-six million, two thousand, six hundred twenty-three".