40636766 has 16 divisors (see below), whose sum is σ = 64879056. Its totient is φ = 19022976.

The previous prime is 40636747. The next prime is 40636769. The reversal of 40636766 is 66763604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40636769) 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, 3665 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (4054941).

Almost surely, 2^40636766 is an apocalyptic number.

40636766 is a deficient number, since it is larger than the sum of its proper divisors (24242290).

40636766 is a wasteful number, since it uses less digits than its factorization.

40636766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 40636766 is about 6374.6973261481. The cubic root of 40636766 is about 343.8004013810.

The spelling of 40636766 in words is "forty million, six hundred thirty-six thousand, seven hundred sixty-six".