40772691 has 12 divisors (see below), whose sum is σ = 59131800. Its totient is φ = 27072000.

The previous prime is 40772663. The next prime is 40772701. The reversal of 40772691 is 19627704.

It is a happy number.

It is not a de Polignac number, because 40772691 - 2¹⁰ = 40771667 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40772191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6766 + ... + 11283.

It is an arithmetic number, because the mean of its divisors is an integer number (4927650).

Almost surely, 2^40772691 is an apocalyptic number.

40772691 is a deficient number, since it is larger than the sum of its proper divisors (18359109).

40772691 is a wasteful number, since it uses less digits than its factorization.

40772691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18306 (or 18303 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 40772691 is about 6385.3497163429. The cubic root of 40772691 is about 344.1832981805.

The spelling of 40772691 in words is "forty million, seven hundred seventy-two thousand, six hundred ninety-one".