1490631 has 4 divisors (see below), whose sum is σ = 1987512. Its totient is φ = 993752.

The previous prime is 1490627. The next prime is 1490633. The reversal of 1490631 is 1360941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1490631 - 2² = 1490627 is a prime.

It is a super-2 number, since 2×1490631² = 4443961556322, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490633) 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, 248436 + ... + 248441.

It is an arithmetic number, because the mean of its divisors is an integer number (496878).

2^1490631 is an apocalyptic number.

1490631 is a deficient number, since it is larger than the sum of its proper divisors (496881).

1490631 is an equidigital number, since it uses as much as digits as its factorization.

1490631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496880.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1490631 is about 1220.9140018855. The cubic root of 1490631 is about 114.2325968190.

The spelling of 1490631 in words is "one million, four hundred ninety thousand, six hundred thirty-one".