8627421 has 12 divisors (see below), whose sum is σ = 12644576. Its totient is φ = 5228520.

The previous prime is 8627417. The next prime is 8627429. The reversal of 8627421 is 1247268.

8627421 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8627421 - 2² = 8627417 is a prime.

It is a super-2 number, since 2×8627421² = 148864786222482, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

8627421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8627429) 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, 11521 + ... + 12246.

Almost surely, 2^8627421 is an apocalyptic number.

It is an amenable number.

8627421 is a deficient number, since it is larger than the sum of its proper divisors (4017155).

8627421 is a wasteful number, since it uses less digits than its factorization.

8627421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23792 (or 23781 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 8627421 is about 2937.2471806098. The cubic root of 8627421 is about 205.0974828854.

The spelling of 8627421 in words is "eight million, six hundred twenty-seven thousand, four hundred twenty-one".