40647696 has 80 divisors (see below), whose sum is σ = 110469120. Its totient is φ = 12862080.

The previous prime is 40647689. The next prime is 40647703. The reversal of 40647696 is 69674604.

It is an interprime number because it is at equal distance from previous prime (40647689) and next prime (40647703).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 87561 + ... + 88023.

It is an arithmetic number, because the mean of its divisors is an integer number (1380864).

Almost surely, 2^40647696 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 40647696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55234560).

40647696 is an abundant number, since it is smaller than the sum of its proper divisors (69821424).

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

40647696 is a wasteful number, since it uses less digits than its factorization.

40647696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 40647696 is about 6375.5545641144. The cubic root of 40647696 is about 343.8312224158.

The spelling of 40647696 in words is "forty million, six hundred forty-seven thousand, six hundred ninety-six".