66701050 has 48 divisors (see below), whose sum is σ = 135225720. Its totient is φ = 24330240.

The previous prime is 66701027. The next prime is 66701051. The reversal of 66701050 is 5010766.

It can be written as a sum of positive squares in 12 ways, for example, as 131769 + 66569281 = 363^2 + 8159^2 .

It is a super-2 number, since 2×66701050² = 8898060142205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (66701051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57274 + ... + 58426.

Almost surely, 2^66701050 is an apocalyptic number.

66701050 is an abundant number, since it is smaller than the sum of its proper divisors (68524670).

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

66701050 is a wasteful number, since it uses less digits than its factorization.

66701050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 66701050 is about 8167.0710784222. The cubic root of 66701050 is about 405.5498298504.

The spelling of 66701050 in words is "sixty-six million, seven hundred one thousand, fifty".