40661701 has 4 divisors (see below), whose sum is σ = 40693804. Its totient is φ = 40629600.

The previous prime is 40661689. The next prime is 40661713. The reversal of 40661701 is 10716604.

It is a happy number.

40661701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40661689) and next prime (40661713).

It can be written as a sum of positive squares in 2 ways, for example, as 24453025 + 16208676 = 4945^2 + 4026^2 .

It is a cyclic number.

It is not a de Polignac number, because 40661701 - 2⁵ = 40661669 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 (40691701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14070 + ... + 16711.

It is an arithmetic number, because the mean of its divisors is an integer number (10173451).

Almost surely, 2^40661701 is an apocalyptic number.

It is an amenable number.

40661701 is a deficient number, since it is larger than the sum of its proper divisors (32103).

40661701 is a wasteful number, since it uses less digits than its factorization.

40661701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32102.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 40661701 is about 6376.6528053517. The cubic root of 40661701 is about 343.8707064359.

The spelling of 40661701 in words is "forty million, six hundred sixty-one thousand, seven hundred one".