40720766 has 8 divisors (see below), whose sum is σ = 61182000. Its totient is φ = 20326768.

The previous prime is 40720759. The next prime is 40720817. The reversal of 40720766 is 66702704.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15266 + ... + 17733.

It is an arithmetic number, because the mean of its divisors is an integer number (7647750).

Almost surely, 2^40720766 is an apocalyptic number.

40720766 is a deficient number, since it is larger than the sum of its proper divisors (20461234).

40720766 is a wasteful number, since it uses less digits than its factorization.

40720766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33618.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 40720766 is about 6381.2824729830. The cubic root of 40720766 is about 344.0371275503.

The spelling of 40720766 in words is "forty million, seven hundred twenty thousand, seven hundred sixty-six".