1667072 has 52 divisors (see below), whose sum is σ = 3735096. Its totient is φ = 737280.

The previous prime is 1667053. The next prime is 1667077. The reversal of 1667072 is 2707661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667077) 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, 45038 + ... + 45074.

2^1667072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1667072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867548).

1667072 is an abundant number, since it is smaller than the sum of its proper divisors (2068024).

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

1667072 is an equidigital number, since it uses as much as digits as its factorization.

1667072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1667072 is about 1291.1514241172. The cubic root of 1667072 is about 118.5727208867.

The spelling of 1667072 in words is "one million, six hundred sixty-seven thousand, seventy-two".