40166653 has 4 divisors (see below), whose sum is σ = 41551740. Its totient is φ = 38781568.

The previous prime is 40166603. The next prime is 40166713. The reversal of 40166653 is 35666104.

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 31058329 + 9108324 = 5573^2 + 3018^2 .

It is a cyclic number.

It is not a de Polignac number, because 40166653 - 2⁹ = 40166141 is a prime.

It is a super-2 number, since 2×40166653² = 3226720026444818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40166603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692500 + ... + 692557.

It is an arithmetic number, because the mean of its divisors is an integer number (10387935).

Almost surely, 2^40166653 is an apocalyptic number.

It is an amenable number.

40166653 is a deficient number, since it is larger than the sum of its proper divisors (1385087).

40166653 is a wasteful number, since it uses less digits than its factorization.

40166653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385086.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 40166653 is about 6337.7167024095. The cubic root of 40166653 is about 342.4694856222.

The spelling of 40166653 in words is "forty million, one hundred sixty-six thousand, six hundred fifty-three".