40650864 has 80 divisors (see below), whose sum is σ = 110373888. Its totient is φ = 12877056.

The previous prime is 40650851. The next prime is 40650871. The reversal of 40650864 is 46805604.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83229 + ... + 83715.

Almost surely, 2^40650864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40650864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55186944).

40650864 is an abundant number, since it is smaller than the sum of its proper divisors (69723024).

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

40650864 is a wasteful number, since it uses less digits than its factorization.

40650864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 40650864 is about 6375.8030082492. The cubic root of 40650864 is about 343.8401546893.

It can be divided in two parts, 40650 and 864, that added together give a palindrome (41514).

The spelling of 40650864 in words is "forty million, six hundred fifty thousand, eight hundred sixty-four".