40800637 has 2 divisors, whose sum is σ = 40800638. Its totient is φ = 40800636.

The previous prime is 40800623. The next prime is 40800673. The reversal of 40800637 is 73600804.

Together with next prime (40800673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35832196 + 4968441 = 5986^2 + 2229^2 .

It is a cyclic number.

It is not a de Polignac number, because 40800637 - 2⁷ = 40800509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40800337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20400318 + 20400319.

It is an arithmetic number, because the mean of its divisors is an integer number (20400319).

Almost surely, 2^40800637 is an apocalyptic number.

It is an amenable number.

40800637 is a deficient number, since it is larger than the sum of its proper divisors (1).

40800637 is an equidigital number, since it uses as much as digits as its factorization.

40800637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40800637 is about 6387.5376319831. The cubic root of 40800637 is about 344.2619157511.

The spelling of 40800637 in words is "forty million, eight hundred thousand, six hundred thirty-seven".