20370697 has 2 divisors, whose sum is σ = 20370698. Its totient is φ = 20370696.

The previous prime is 20370659. The next prime is 20370719. The reversal of 20370697 is 79607302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 84681 = 4504^2 + 291^2 .

It is a cyclic number.

It is not a de Polignac number, because 20370697 - 2⁷ = 20370569 is a prime.

It is not a weakly prime, because it can be changed into another prime (20373697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10185348 + 10185349.

It is an arithmetic number, because the mean of its divisors is an integer number (10185349).

Almost surely, 2^20370697 is an apocalyptic number.

It is an amenable number.

20370697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20370697 is an equidigital number, since it uses as much as digits as its factorization.

20370697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 20370697 is about 4513.3908538924. The cubic root of 20370697 is about 273.1085499084.

Adding to 20370697 its reverse (79607302), we get a palindrome (99977999).

The spelling of 20370697 in words is "twenty million, three hundred seventy thousand, six hundred ninety-seven".