40660897 has 2 divisors, whose sum is σ = 40660898. Its totient is φ = 40660896.

The previous prime is 40660877. The next prime is 40660901. The reversal of 40660897 is 79806604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32993536 + 7667361 = 5744^2 + 2769^2 .

It is a cyclic number.

It is not a de Polignac number, because 40660897 - 2¹⁵ = 40628129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40660847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20330448 + 20330449.

It is an arithmetic number, because the mean of its divisors is an integer number (20330449).

Almost surely, 2^40660897 is an apocalyptic number.

It is an amenable number.

40660897 is a deficient number, since it is larger than the sum of its proper divisors (1).

40660897 is an equidigital number, since it uses as much as digits as its factorization.

40660897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 40660897 is about 6376.5897625612. The cubic root of 40660897 is about 343.8684399799.

The spelling of 40660897 in words is "forty million, six hundred sixty thousand, eight hundred ninety-seven".