20634701 has 2 divisors, whose sum is σ = 20634702. Its totient is φ = 20634700.

The previous prime is 20634697. The next prime is 20634709. The reversal of 20634701 is 10743602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15413476 + 5221225 = 3926^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 20634701 - 2² = 20634697 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20634709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10317350 + 10317351.

It is an arithmetic number, because the mean of its divisors is an integer number (10317351).

Almost surely, 2^20634701 is an apocalyptic number.

It is an amenable number.

20634701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20634701 is an equidigital number, since it uses as much as digits as its factorization.

20634701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20634701 is about 4542.5434505352. The cubic root of 20634701 is about 274.2833173334.

The spelling of 20634701 in words is "twenty million, six hundred thirty-four thousand, seven hundred one".