20361701 has 6 divisors (see below), whose sum is σ = 20609202. Its totient is φ = 20115200.

The previous prime is 20361689. The next prime is 20361703. The reversal of 20361701 is 10716302.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10432900 + 9928801 = 3230^2 + 3151^2 .

It is not a de Polignac number, because 20361701 - 2¹⁰ = 20360677 is a prime.

It is a super-2 number, since 2×20361701² = 829197735226802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45125 + ... + 45573.

It is an arithmetic number, because the mean of its divisors is an integer number (3434867).

Almost surely, 2^20361701 is an apocalyptic number.

It is an amenable number.

20361701 is a deficient number, since it is larger than the sum of its proper divisors (247501).

20361701 is an frugal number, since it uses more digits than its factorization.

20361701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 20361701 is about 4512.3941538833. The cubic root of 20361701 is about 273.0683410688.

The spelling of 20361701 in words is "twenty million, three hundred sixty-one thousand, seven hundred one".