1490651 has 4 divisors (see below), whose sum is σ = 1509600. Its totient is φ = 1471704.

The previous prime is 1490647. The next prime is 1490663. The reversal of 1490651 is 1560941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1560941 = 23 ⋅67867.

It is a cyclic number.

It is not a de Polignac number, because 1490651 - 2² = 1490647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1490651.

It is not an unprimeable number, because it can be changed into a prime (1490641) 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, 9356 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (377400).

2^1490651 is an apocalyptic number.

1490651 is a deficient number, since it is larger than the sum of its proper divisors (18949).

1490651 is an equidigital number, since it uses as much as digits as its factorization.

1490651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18948.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1490651 is about 1220.9221924431. The cubic root of 1490651 is about 114.2331077082.

The spelling of 1490651 in words is "one million, four hundred ninety thousand, six hundred fifty-one".