40266613 has 4 divisors (see below), whose sum is σ = 41565568. Its totient is φ = 38967660.

The previous prime is 40266593. The next prime is 40266617. The reversal of 40266613 is 31666204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40266613 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 (40266617) 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, 649431 + ... + 649492.

It is an arithmetic number, because the mean of its divisors is an integer number (10391392).

Almost surely, 2^40266613 is an apocalyptic number.

It is an amenable number.

40266613 is a deficient number, since it is larger than the sum of its proper divisors (1298955).

40266613 is a wasteful number, since it uses less digits than its factorization.

40266613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298954.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40266613 is about 6345.5979229699. The cubic root of 40266613 is about 342.7533437353.

The spelling of 40266613 in words is "forty million, two hundred sixty-six thousand, six hundred thirteen".