1691364 has 24 divisors (see below), whose sum is σ = 4179168. Its totient is φ = 530560.

The previous prime is 1691359. The next prime is 1691369. The reversal of 1691364 is 4631961.

It is an interprime number because it is at equal distance from previous prime (1691359) and next prime (1691369).

It is not an unprimeable number, because it can be changed into a prime (1691369) 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, 3942 + ... + 4349.

It is an arithmetic number, because the mean of its divisors is an integer number (174132).

2^1691364 is an apocalyptic number.

It is an amenable number.

1691364 is an abundant number, since it is smaller than the sum of its proper divisors (2487804).

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

1691364 is a wasteful number, since it uses less digits than its factorization.

1691364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8315 (or 8313 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 1691364 is about 1300.5245095730. The cubic root of 1691364 is about 119.1458795198.

The spelling of 1691364 in words is "one million, six hundred ninety-one thousand, three hundred sixty-four".