40772761 has 4 divisors (see below), whose sum is σ = 40810192. Its totient is φ = 40735332.

The previous prime is 40772723. The next prime is 40772789. The reversal of 40772761 is 16727704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40772761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40772701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17031 + ... + 19276.

It is an arithmetic number, because the mean of its divisors is an integer number (10202548).

Almost surely, 2^40772761 is an apocalyptic number.

It is an amenable number.

40772761 is a deficient number, since it is larger than the sum of its proper divisors (37431).

40772761 is a wasteful number, since it uses less digits than its factorization.

40772761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37430.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 40772761 is about 6385.3551976378. The cubic root of 40772761 is about 344.1834951491.

The spelling of 40772761 in words is "forty million, seven hundred seventy-two thousand, seven hundred sixty-one".