40665702 has 128 divisors (see below), whose sum is σ = 109486080. Its totient is φ = 9757440.

The previous prime is 40665697. The next prime is 40665721. The reversal of 40665702 is 20756604.

It is a self number, because there is not a number n which added to its sum of digits gives 40665702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 456874 + ... + 456962.

It is an arithmetic number, because the mean of its divisors is an integer number (855360).

Almost surely, 2^40665702 is an apocalyptic number.

40665702 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40665702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54743040).

40665702 is an abundant number, since it is smaller than the sum of its proper divisors (68820378).

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

40665702 is a wasteful number, since it uses less digits than its factorization.

40665702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 40665702 is about 6376.9665202195. The cubic root of 40665702 is about 343.8819847112.

The spelling of 40665702 in words is "forty million, six hundred sixty-five thousand, seven hundred two".