40616621 has 4 divisors (see below), whose sum is σ = 43005852. Its totient is φ = 38227392.

The previous prime is 40616593. The next prime is 40616629. The reversal of 40616621 is 12661604.

It is a happy number.

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 36735721 + 3880900 = 6061^2 + 1970^2 .

It is a cyclic number.

It is not a de Polignac number, because 40616621 - 2⁶ = 40616557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40616629) 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, 1194590 + ... + 1194623.

It is an arithmetic number, because the mean of its divisors is an integer number (10751463).

Almost surely, 2^40616621 is an apocalyptic number.

It is an amenable number.

40616621 is a deficient number, since it is larger than the sum of its proper divisors (2389231).

40616621 is a wasteful number, since it uses less digits than its factorization.

40616621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389230.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40616621 is about 6373.1170552564. The cubic root of 40616621 is about 343.7435808829.

The spelling of 40616621 in words is "forty million, six hundred sixteen thousand, six hundred twenty-one".