40767637 has 2 divisors, whose sum is σ = 40767638. Its totient is φ = 40767636.

The previous prime is 40767631. The next prime is 40767641. The reversal of 40767637 is 73676704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39765636 + 1002001 = 6306^2 + 1001^2 .

It is a cyclic number.

It is not a de Polignac number, because 40767637 - 2²³ = 32379029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40767637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40767631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20383818 + 20383819.

It is an arithmetic number, because the mean of its divisors is an integer number (20383819).

Almost surely, 2^40767637 is an apocalyptic number.

It is an amenable number.

40767637 is a deficient number, since it is larger than the sum of its proper divisors (1).

40767637 is an equidigital number, since it uses as much as digits as its factorization.

40767637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 40.

The square root of 40767637 is about 6384.9539544150. The cubic root of 40767637 is about 344.1690764533.

The spelling of 40767637 in words is "forty million, seven hundred sixty-seven thousand, six hundred thirty-seven".