40696643 has 8 divisors (see below), whose sum is σ = 44356368. Its totient is φ = 37112544.

The previous prime is 40696631. The next prime is 40696661. The reversal of 40696643 is 34669604.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40696643 - 2¹⁰ = 40695619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40696597 and 40696606.

It is not an unprimeable number, because it can be changed into a prime (40696603) 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, 17780 + ... + 19937.

It is an arithmetic number, because the mean of its divisors is an integer number (5544546).

Almost surely, 2^40696643 is an apocalyptic number.

40696643 is a deficient number, since it is larger than the sum of its proper divisors (3659725).

40696643 is a wasteful number, since it uses less digits than its factorization.

40696643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37813.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 40696643 is about 6379.3920556743. The cubic root of 40696643 is about 343.9691782147.

The spelling of 40696643 in words is "forty million, six hundred ninety-six thousand, six hundred forty-three".