40722697 has 2 divisors, whose sum is σ = 40722698. Its totient is φ = 40722696.

The previous prime is 40722653. The next prime is 40722713. The reversal of 40722697 is 79622704.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27625536 + 13097161 = 5256^2 + 3619^2 .

It is a cyclic number.

It is not a de Polignac number, because 40722697 - 2⁷ = 40722569 is a prime.

It is not a weakly prime, because it can be changed into another prime (40725697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20361348 + 20361349.

It is an arithmetic number, because the mean of its divisors is an integer number (20361349).

Almost surely, 2^40722697 is an apocalyptic number.

It is an amenable number.

40722697 is a deficient number, since it is larger than the sum of its proper divisors (1).

40722697 is an equidigital number, since it uses as much as digits as its factorization.

40722697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 40722697 is about 6381.4337730639. The cubic root of 40722697 is about 344.0425656045.

It can be divided in two parts, 407 and 22697, that added together give a square (23104 = 152²).

The spelling of 40722697 in words is "forty million, seven hundred twenty-two thousand, six hundred ninety-seven".