40653617 has 4 divisors (see below), whose sum is σ = 41965056. Its totient is φ = 39342180.

The previous prime is 40653593. The next prime is 40653629. The reversal of 40653617 is 71635604.

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 not a de Polignac number, because 40653617 - 2⁶ = 40653553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40655617) 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, 655673 + ... + 655734.

It is an arithmetic number, because the mean of its divisors is an integer number (10491264).

Almost surely, 2^40653617 is an apocalyptic number.

It is an amenable number.

40653617 is a deficient number, since it is larger than the sum of its proper divisors (1311439).

40653617 is a wasteful number, since it uses less digits than its factorization.

40653617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311438.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 40653617 is about 6376.0188989682. The cubic root of 40653617 is about 343.8479164807.

The spelling of 40653617 in words is "forty million, six hundred fifty-three thousand, six hundred seventeen".