40703657 has 2 divisors, whose sum is σ = 40703658. Its totient is φ = 40703656.

The previous prime is 40703647. The next prime is 40703699. The reversal of 40703657 is 75630704.

40703657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39891856 + 811801 = 6316^2 + 901^2 .

It is a cyclic number.

It is not a de Polignac number, because 40703657 - 2²⁰ = 39655081 is a prime.

It is not a weakly prime, because it can be changed into another prime (40703647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20351828 + 20351829.

It is an arithmetic number, because the mean of its divisors is an integer number (20351829).

Almost surely, 2^40703657 is an apocalyptic number.

It is an amenable number.

40703657 is a deficient number, since it is larger than the sum of its proper divisors (1).

40703657 is an equidigital number, since it uses as much as digits as its factorization.

40703657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 40703657 is about 6379.9417708942. The cubic root of 40703657 is about 343.9889379217.

The spelling of 40703657 in words is "forty million, seven hundred three thousand, six hundred fifty-seven".