40616691 has 8 divisors (see below), whose sum is σ = 55476624. Its totient is φ = 26417280.

The previous prime is 40616687. The next prime is 40616707. The reversal of 40616691 is 19661604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40616691 - 2² = 40616687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40616651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164986 + ... + 165231.

It is an arithmetic number, because the mean of its divisors is an integer number (6934578).

Almost surely, 2^40616691 is an apocalyptic number.

40616691 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40616691 is a deficient number, since it is larger than the sum of its proper divisors (14859933).

40616691 is a wasteful number, since it uses less digits than its factorization.

40616691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330261.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 40616691 is about 6373.1225470722. The cubic root of 40616691 is about 343.7437783557.

The spelling of 40616691 in words is "forty million, six hundred sixteen thousand, six hundred ninety-one".