40648566 has 16 divisors (see below), whose sum is σ = 92911104. Its totient is φ = 11613864.

The previous prime is 40648537. The next prime is 40648583. The reversal of 40648566 is 66584604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483870 + ... + 483953.

It is an arithmetic number, because the mean of its divisors is an integer number (5806944).

Almost surely, 2^40648566 is an apocalyptic number.

40648566 is an abundant number, since it is smaller than the sum of its proper divisors (52262538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40648566 is a wasteful number, since it uses less digits than its factorization.

40648566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967835.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 40648566 is about 6375.6227931081. The cubic root of 40648566 is about 343.8336754538.

It can be divided in two parts, 40648 and 566, that added together give a palindrome (41214).

The spelling of 40648566 in words is "forty million, six hundred forty-eight thousand, five hundred sixty-six".