40630571 has 4 divisors (see below), whose sum is σ = 41575512. Its totient is φ = 39685632.

The previous prime is 40630519. The next prime is 40630573. The reversal of 40630571 is 17503604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40630571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40630571.

It is not an unprimeable number, because it can be changed into a prime (40630573) 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, 472406 + ... + 472491.

It is an arithmetic number, because the mean of its divisors is an integer number (10393878).

Almost surely, 2^40630571 is an apocalyptic number.

40630571 is a deficient number, since it is larger than the sum of its proper divisors (944941).

40630571 is an equidigital number, since it uses as much as digits as its factorization.

40630571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944940.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 40630571 is about 6374.2114022050. The cubic root of 40630571 is about 343.7829299142.

The spelling of 40630571 in words is "forty million, six hundred thirty thousand, five hundred seventy-one".