1722612 has 12 divisors (see below), whose sum is σ = 4019456. Its totient is φ = 574200.

The previous prime is 1722607. The next prime is 1722619. The reversal of 1722612 is 2162271.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71764 + ... + 71787.

2^1722612 is an apocalyptic number.

1722612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1722612 is an abundant number, since it is smaller than the sum of its proper divisors (2296844).

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

1722612 is a wasteful number, since it uses less digits than its factorization.

1722612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143558 (or 143556 counting only the distinct ones).

The product of its digits is 336, while the sum is 21.

The square root of 1722612 is about 1312.4831427489. The cubic root of 1722612 is about 119.8751479225.

Adding to 1722612 its reverse (2162271), we get a palindrome (3884883).

The spelling of 1722612 in words is "one million, seven hundred twenty-two thousand, six hundred twelve".