40641701 has 4 divisors (see below), whose sum is σ = 41633004. Its totient is φ = 39650400.

The previous prime is 40641661. The next prime is 40641709. The reversal of 40641701 is 10714604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17850625 + 22791076 = 4225^2 + 4774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40641701 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 (40641709) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 495590 + ... + 495671.

It is an arithmetic number, because the mean of its divisors is an integer number (10408251).

Almost surely, 2^40641701 is an apocalyptic number.

40641701 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40641701 is a deficient number, since it is larger than the sum of its proper divisors (991303).

40641701 is an equidigital number, since it uses as much as digits as its factorization.

40641701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991302.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 40641701 is about 6375.0843915983. The cubic root of 40641701 is about 343.8143180585.

The spelling of 40641701 in words is "forty million, six hundred forty-one thousand, seven hundred one".