20695075 has 6 divisors (see below), whose sum is σ = 25661924. Its totient is φ = 16556040.

The previous prime is 20695061. The next prime is 20695093. The reversal of 20695075 is 57059602.

It is not a de Polignac number, because 20695075 - 2¹⁵ = 20662307 is a prime.

It is a super-2 number, since 2×20695075² = 856572258511250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20695075.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413877 + ... + 413926.

Almost surely, 2^20695075 is an apocalyptic number.

20695075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20695075 is a deficient number, since it is larger than the sum of its proper divisors (4966849).

20695075 is an equidigital number, since it uses as much as digits as its factorization.

20695075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827813 (or 827808 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 20695075 is about 4549.1839927618. The cubic root of 20695075 is about 274.5505606360.

It can be divided in two parts, 206950 and 75, that added together give a square (207025 = 455²).

The spelling of 20695075 in words is "twenty million, six hundred ninety-five thousand, seventy-five".