66125982 has 24 divisors (see below), whose sum is σ = 143209944. Its totient is φ = 20346144.

The previous prime is 66125977. The next prime is 66125987. The reversal of 66125982 is 28952166.

It is an interprime number because it is at equal distance from previous prime (66125977) and next prime (66125987).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 66125982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66125987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31593 + ... + 33620.

It is an arithmetic number, because the mean of its divisors is an integer number (5967081).

Almost surely, 2^66125982 is an apocalyptic number.

66125982 is an abundant number, since it is smaller than the sum of its proper divisors (77083962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66125982 is a wasteful number, since it uses less digits than its factorization.

66125982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65244 (or 65231 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 66125982 is about 8131.7883641915. The cubic root of 66125982 is about 404.3809717097.

The spelling of 66125982 in words is "sixty-six million, one hundred twenty-five thousand, nine hundred eighty-two".