7645620 has 48 divisors (see below), whose sum is σ = 21692160. Its totient is φ = 2011776.

The previous prime is 7645607. The next prime is 7645661. The reversal of 7645620 is 265467.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3934 + ... + 5546.

It is an arithmetic number, because the mean of its divisors is an integer number (451920).

Almost surely, 2^7645620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7645620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10846080).

7645620 is an abundant number, since it is smaller than the sum of its proper divisors (14046540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7645620 is a wasteful number, since it uses less digits than its factorization.

7645620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 7645620 is about 2765.0714276488. The cubic root of 7645620 is about 197.0021214782.

The spelling of 7645620 in words is "seven million, six hundred forty-five thousand, six hundred twenty".