40065670 has 8 divisors (see below), whose sum is σ = 72118224. Its totient is φ = 16026264.

The previous prime is 40065659. The next prime is 40065679. The reversal of 40065670 is 7656004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40065679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003274 + ... + 2003293.

It is an arithmetic number, because the mean of its divisors is an integer number (9014778).

Almost surely, 2^40065670 is an apocalyptic number.

40065670 is a deficient number, since it is larger than the sum of its proper divisors (32052554).

40065670 is a wasteful number, since it uses less digits than its factorization.

40065670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006574.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 40065670 is about 6329.7448605769. The cubic root of 40065670 is about 342.1822438744.

The spelling of 40065670 in words is "forty million, sixty-five thousand, six hundred seventy".