20611701 has 48 divisors (see below), whose sum is σ = 35425728. Its totient is φ = 11404800.

The previous prime is 20611697. The next prime is 20611727. The reversal of 20611701 is 10711602.

It is not a de Polignac number, because 20611701 - 2² = 20611697 is a prime.

It is a super-2 number, since 2×20611701² = 849684436226802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20611741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62106 + ... + 62436.

It is an arithmetic number, because the mean of its divisors is an integer number (738036).

Almost surely, 2^20611701 is an apocalyptic number.

It is an amenable number.

20611701 is a deficient number, since it is larger than the sum of its proper divisors (14814027).

20611701 is a wasteful number, since it uses less digits than its factorization.

20611701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 20611701 is about 4540.0111233344. The cubic root of 20611701 is about 274.1813715604.

Subtracting from 20611701 its reverse (10711602), we obtain a palindrome (9900099).

It can be divided in two parts, 20611 and 701, that added together give a palindrome (21312).

The spelling of 20611701 in words is "twenty million, six hundred eleven thousand, seven hundred one".