40661207 has 8 divisors (see below), whose sum is σ = 41758080. Its totient is φ = 39578040.

The previous prime is 40661167. The next prime is 40661213. The reversal of 40661207 is 70216604.

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

It is a cyclic number.

It is not a de Polignac number, because 40661207 - 2⁶ = 40661143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732 + ... + 9422.

It is an arithmetic number, because the mean of its divisors is an integer number (5219760).

Almost surely, 2^40661207 is an apocalyptic number.

40661207 is a deficient number, since it is larger than the sum of its proper divisors (1096873).

40661207 is a wasteful number, since it uses less digits than its factorization.

40661207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 40661207 is about 6376.6140701786. The cubic root of 40661207 is about 343.8693138657.

The spelling of 40661207 in words is "forty million, six hundred sixty-one thousand, two hundred seven".