40580661 has 16 divisors (see below), whose sum is σ = 59604480. Its totient is φ = 24353520.

The previous prime is 40580653. The next prime is 40580663. The reversal of 40580661 is 16608504.

It is not a de Polignac number, because 40580661 - 2³ = 40580653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40580663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2571 + ... + 9368.

It is an arithmetic number, because the mean of its divisors is an integer number (3725280).

Almost surely, 2^40580661 is an apocalyptic number.

It is an amenable number.

40580661 is a deficient number, since it is larger than the sum of its proper divisors (19023819).

40580661 is a wasteful number, since it uses less digits than its factorization.

40580661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12056.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40580661 is about 6370.2952050906. The cubic root of 40580661 is about 343.6421062599.

The spelling of 40580661 in words is "forty million, five hundred eighty thousand, six hundred sixty-one".