7071990 has 48 divisors (see below), whose sum is σ = 17940528. Its totient is φ = 1783872.

The previous prime is 7071989. The next prime is 7071991. The reversal of 7071990 is 991707.

It is an interprime number because it is at equal distance from previous prime (7071989) and next prime (7071991).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7071991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10504 + ... + 11156.

It is an arithmetic number, because the mean of its divisors is an integer number (373761).

Almost surely, 2^7071990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7071990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8970264).

7071990 is an abundant number, since it is smaller than the sum of its proper divisors (10868538).

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

7071990 is a wasteful number, since it uses less digits than its factorization.

7071990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 3969, while the sum is 33.

The square root of 7071990 is about 2659.3213419969. The cubic root of 7071990 is about 191.9466540163.

The spelling of 7071990 in words is "seven million, seventy-one thousand, nine hundred ninety".