40630641 has 4 divisors (see below), whose sum is σ = 54174192. Its totient is φ = 27087092.

The previous prime is 40630621. The next prime is 40630643. The reversal of 40630641 is 14603604.

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 40630641 - 2⁹ = 40630129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40630643) 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, 6771771 + ... + 6771776.

It is an arithmetic number, because the mean of its divisors is an integer number (13543548).

Almost surely, 2^40630641 is an apocalyptic number.

It is an amenable number.

40630641 is a deficient number, since it is larger than the sum of its proper divisors (13543551).

40630641 is a wasteful number, since it uses less digits than its factorization.

40630641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13543550.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40630641 is about 6374.2168930779. The cubic root of 40630641 is about 343.7831273418.

The spelling of 40630641 in words is "forty million, six hundred thirty thousand, six hundred forty-one".