7087640 has 64 divisors (see below), whose sum is σ = 19310400. Its totient is φ = 2285568.

The previous prime is 7087631. The next prime is 7087667. The reversal of 7087640 is 467807.

It is a junction number, because it is equal to n+sod(n) for n = 7087597 and 7087606.

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, 4016 + ... + 5504.

It is an arithmetic number, because the mean of its divisors is an integer number (301725).

Almost surely, 2^7087640 is an apocalyptic number.

7087640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7087640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9655200).

7087640 is an abundant number, since it is smaller than the sum of its proper divisors (12222760).

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

7087640 is a wasteful number, since it uses less digits than its factorization.

7087640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 7087640 is about 2662.2621959529. The cubic root of 7087640 is about 192.0881395093.

The spelling of 7087640 in words is "seven million, eighty-seven thousand, six hundred forty".