66372641 has 8 divisors (see below), whose sum is σ = 73332864. Its totient is φ = 59752000.

The previous prime is 66372617. The next prime is 66372653. The reversal of 66372641 is 14627366.

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 66372641 - 2⁶ = 66372577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66372671) 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, 84485 + ... + 85266.

It is an arithmetic number, because the mean of its divisors is an integer number (9166608).

Almost surely, 2^66372641 is an apocalyptic number.

It is an amenable number.

66372641 is a deficient number, since it is larger than the sum of its proper divisors (6960223).

66372641 is a wasteful number, since it uses less digits than its factorization.

66372641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169791.

The product of its digits is 36288, while the sum is 35.

The square root of 66372641 is about 8146.9405914122. The cubic root of 66372641 is about 404.8831466974.

The spelling of 66372641 in words is "sixty-six million, three hundred seventy-two thousand, six hundred forty-one".