20627397 has 12 divisors (see below), whose sum is σ = 34051680. Its totient is φ = 11787048.

The previous prime is 20627393. The next prime is 20627419. The reversal of 20627397 is 79372602.

20627397 is a `hidden beast` number, since 20 + 627 + 3 + 9 + 7 = 666.

It is not a de Polignac number, because 20627397 - 2² = 20627393 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20627393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163647 + ... + 163772.

It is an arithmetic number, because the mean of its divisors is an integer number (2837640).

Almost surely, 2^20627397 is an apocalyptic number.

It is an amenable number.

20627397 is a deficient number, since it is larger than the sum of its proper divisors (13424283).

20627397 is a wasteful number, since it uses less digits than its factorization.

20627397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327432 (or 327429 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 20627397 is about 4541.7394244937. The cubic root of 20627397 is about 274.2509511142.

Adding to 20627397 its reverse (79372602), we get a palindrome (99999999).

The spelling of 20627397 in words is "twenty million, six hundred twenty-seven thousand, three hundred ninety-seven".