1491646 has 16 divisors (see below), whose sum is σ = 2437344. Its totient is φ = 680544.

The previous prime is 1491643. The next prime is 1491649. The reversal of 1491646 is 6461941.

It is an interprime number because it is at equal distance from previous prime (1491643) and next prime (1491649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2400 + ... + 2956.

It is an arithmetic number, because the mean of its divisors is an integer number (152334).

2^1491646 is an apocalyptic number.

1491646 is a deficient number, since it is larger than the sum of its proper divisors (945698).

1491646 is a wasteful number, since it uses less digits than its factorization.

1491646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675.

The product of its digits is 5184, while the sum is 31.

The square root of 1491646 is about 1221.3296033422. The cubic root of 1491646 is about 114.2585186778.

The spelling of 1491646 in words is "one million, four hundred ninety-one thousand, six hundred forty-six".