40702661 has 2 divisors, whose sum is σ = 40702662. Its totient is φ = 40702660.

The previous prime is 40702643. The next prime is 40702679. The reversal of 40702661 is 16620704.

It is a balanced prime because it is at equal distance from previous prime (40702643) and next prime (40702679).

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 15952036 = 4975^2 + 3994^2 .

It is a cyclic number.

It is not a de Polignac number, because 40702661 - 2¹⁰ = 40701637 is a prime.

It is a super-2 number, since 2×40702661² = 3313413224961842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40702661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40702691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20351330 + 20351331.

It is an arithmetic number, because the mean of its divisors is an integer number (20351331).

Almost surely, 2^40702661 is an apocalyptic number.

It is an amenable number.

40702661 is a deficient number, since it is larger than the sum of its proper divisors (1).

40702661 is an equidigital number, since it uses as much as digits as its factorization.

40702661 is an evil number, because the sum of its binary digits is even.

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

The square root of 40702661 is about 6379.8637132779. The cubic root of 40702661 is about 343.9861321478.

The spelling of 40702661 in words is "forty million, seven hundred two thousand, six hundred sixty-one".