7648621 has 4 divisors (see below), whose sum is σ = 8051200. Its totient is φ = 7246044.

The previous prime is 7648609. The next prime is 7648633. The reversal of 7648621 is 1268467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (7648609) and next prime (7648633).

It is a cyclic number.

It is not a de Polignac number, because 7648621 - 2⁷ = 7648493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201261 + ... + 201298.

It is an arithmetic number, because the mean of its divisors is an integer number (2012800).

Almost surely, 2^7648621 is an apocalyptic number.

It is an amenable number.

7648621 is a deficient number, since it is larger than the sum of its proper divisors (402579).

7648621 is a wasteful number, since it uses less digits than its factorization.

7648621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402578.

The product of its digits is 16128, while the sum is 34.

The square root of 7648621 is about 2765.6140367014. The cubic root of 7648621 is about 197.0278933594.

The spelling of 7648621 in words is "seven million, six hundred forty-eight thousand, six hundred twenty-one".