7003620 has 144 divisors (see below), whose sum is σ = 23757552. Its totient is φ = 1658880.

The previous prime is 7003603. The next prime is 7003639. The reversal of 7003620 is 263007.

It can be written as a sum of positive squares in 8 ways, for example, as 1695204 + 5308416 = 1302^2 + 2304^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 7003593 and 7003602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95904 + ... + 95976.

It is an arithmetic number, because the mean of its divisors is an integer number (164983).

Almost surely, 2^7003620 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 7003620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11878776).

7003620 is an abundant number, since it is smaller than the sum of its proper divisors (16753932).

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

7003620 is a wasteful number, since it uses less digits than its factorization.

7003620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 7003620 is about 2646.4353383372. The cubic root of 7003620 is about 191.3260878845.

Adding to 7003620 its reverse (263007), we get a palindrome (7266627).

The spelling of 7003620 in words is "seven million, three thousand, six hundred twenty".