60666381 has 8 divisors (see below), whose sum is σ = 89876160. Its totient is φ = 40444236.

The previous prime is 60666379. The next prime is 60666401. The reversal of 60666381 is 18366606.

It is not a de Polignac number, because 60666381 - 2¹ = 60666379 is a prime.

It is a super-2 number, since 2×60666381² = 7360819567274322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60666301) 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, 1123425 + ... + 1123478.

It is an arithmetic number, because the mean of its divisors is an integer number (11234520).

Almost surely, 2^60666381 is an apocalyptic number.

It is an amenable number.

60666381 is a deficient number, since it is larger than the sum of its proper divisors (29209779).

60666381 is a wasteful number, since it uses less digits than its factorization.

60666381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246912 (or 2246906 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 60666381 is about 7788.8626255699. The cubic root of 60666381 is about 392.9307610671.

The spelling of 60666381 in words is "sixty million, six hundred sixty-six thousand, three hundred eighty-one".