1466890 has 12 divisors (see below), whose sum is σ = 2647314. Its totient is φ = 585224.

The previous prime is 1466887. The next prime is 1466893. The reversal of 1466890 is 986641.

It is an interprime number because it is at equal distance from previous prime (1466887) and next prime (1466893).

It can be written as a sum of positive squares in only one way, i.e., 1320201 + 146689 = 1149^2 + 383^2 .

It is not an unprimeable number, because it can be changed into a prime (1466893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3639 + ... + 4021.

2^1466890 is an apocalyptic number.

1466890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1466890 is a deficient number, since it is larger than the sum of its proper divisors (1180424).

1466890 is an frugal number, since it uses more digits than its factorization.

1466890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1466890 is about 1211.1523438445. The cubic root of 1466890 is about 113.6228946945.

Subtracting from 1466890 its reverse (986641), we obtain a square (480249 = 693²).

The spelling of 1466890 in words is "one million, four hundred sixty-six thousand, eight hundred ninety".