1958706 has 48 divisors (see below), whose sum is σ = 4641624. Its totient is φ = 594432.

The previous prime is 1958699. The next prime is 1958707. The reversal of 1958706 is 6078591.

It can be written as a sum of positive squares in 4 ways, for example, as 1863225 + 95481 = 1365^2 + 309^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1958707) 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, 11236 + ... + 11408.

2^1958706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1958706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2320812).

1958706 is an abundant number, since it is smaller than the sum of its proper divisors (2682918).

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

1958706 is a wasteful number, since it uses less digits than its factorization.

1958706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1958706 is about 1399.5377808405. The cubic root of 1958706 is about 125.1189481082.

Subtracting 1958706 from its reverse (6078591), we obtain a triangular number (4119885 = T₂₈₇₀).

The spelling of 1958706 in words is "one million, nine hundred fifty-eight thousand, seven hundred six".