40666370 has 24 divisors (see below), whose sum is σ = 74850804. Its totient is φ = 15902016.

The previous prime is 40666361. The next prime is 40666391. The reversal of 40666370 is 7366604.

It can be written as a sum of positive squares in 6 ways, for example, as 8392609 + 32273761 = 2897^2 + 5681^2 .

It is a super-3 number, since 3×40666370³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146672 + ... + 146948.

Almost surely, 2^40666370 is an apocalyptic number.

40666370 is a deficient number, since it is larger than the sum of its proper divisors (34184434).

40666370 is an equidigital number, since it uses as much as digits as its factorization.

40666370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 40666370 is about 6377.0188960046. The cubic root of 40666370 is about 343.8838676404.

The spelling of 40666370 in words is "forty million, six hundred sixty-six thousand, three hundred seventy".