40666570 has 48 divisors (see below), whose sum is σ = 85876200. Its totient is φ = 13824384.

The previous prime is 40666559. The next prime is 40666573. The reversal of 40666570 is 7566604.

It can be written as a sum of positive squares in 4 ways, for example, as 14768649 + 25897921 = 3843^2 + 5089^2 .

It is a super-4 number, since 4×40666570⁴ (a number of 32 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (40666573) 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, 72732 + ... + 73288.

Almost surely, 2^40666570 is an apocalyptic number.

40666570 is an abundant number, since it is smaller than the sum of its proper divisors (45209630).

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

40666570 is a wasteful number, since it uses less digits than its factorization.

40666570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 40666570 is about 6377.0345772937. The cubic root of 40666570 is about 343.8844313876.

Adding to 40666570 its sum of digits (34), we get a palindrome (40666604).

The spelling of 40666570 in words is "forty million, six hundred sixty-six thousand, five hundred seventy".