7099640 has 32 divisors (see below), whose sum is σ = 16670880. Its totient is φ = 2716032.

The previous prime is 7099633. The next prime is 7099643. The reversal of 7099640 is 469907.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7099640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7099643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2939 + ... + 4778.

It is an arithmetic number, because the mean of its divisors is an integer number (520965).

Almost surely, 2^7099640 is an apocalyptic number.

It is an amenable number.

7099640 is an abundant number, since it is smaller than the sum of its proper divisors (9571240).

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

7099640 is a wasteful number, since it uses less digits than its factorization.

7099640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7751 (or 7747 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 7099640 is about 2664.5149652423. The cubic root of 7099640 is about 192.1964857763.

The spelling of 7099640 in words is "seven million, ninety-nine thousand, six hundred forty".