40767691 has 8 divisors (see below), whose sum is σ = 41880384. Its totient is φ = 39669960.

The previous prime is 40767689. The next prime is 40767721. The reversal of 40767691 is 19676704.

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 40767691 - 2¹ = 40767689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40767631) 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, 1896 + ... + 9226.

It is an arithmetic number, because the mean of its divisors is an integer number (5235048).

Almost surely, 2^40767691 is an apocalyptic number.

40767691 is a deficient number, since it is larger than the sum of its proper divisors (1112693).

40767691 is an equidigital number, since it uses as much as digits as its factorization.

40767691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7481.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 40767691 is about 6384.9581831050. The cubic root of 40767691 is about 344.1692284131.

The spelling of 40767691 in words is "forty million, seven hundred sixty-seven thousand, six hundred ninety-one".