971790 has 32 divisors (see below), whose sum is σ = 2414880. Its totient is φ = 249984.

The previous prime is 971783. The next prime is 971821. The reversal of 971790 is 97179.

971790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 312 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (75465).

2⁹⁷¹⁷⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 971790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207440).

971790 is an abundant number, since it is smaller than the sum of its proper divisors (1443090).

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

971790 is a wasteful number, since it uses less digits than its factorization.

971790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156.

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

The square root of 971790 is about 985.7940961479. The cubic root of 971790 is about 99.0506831596.

The spelling of 971790 in words is "nine hundred seventy-one thousand, seven hundred ninety".