1662251 has 12 divisors (see below), whose sum is σ = 1817280. Its totient is φ = 1517040.

The previous prime is 1662229. The next prime is 1662257. The reversal of 1662251 is 1522661.

It is not a de Polignac number, because 1662251 - 2¹⁴ = 1645867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38636 + ... + 38678.

It is an arithmetic number, because the mean of its divisors is an integer number (151440).

2^1662251 is an apocalyptic number.

1662251 is a deficient number, since it is larger than the sum of its proper divisors (155029).

1662251 is an equidigital number, since it uses as much as digits as its factorization.

1662251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 103 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1662251 is about 1289.2831341486. The cubic root of 1662251 is about 118.4583105084.

The spelling of 1662251 in words is "one million, six hundred sixty-two thousand, two hundred fifty-one".