1373649 has 8 divisors (see below), whose sum is σ = 1839552. Its totient is φ = 911760.

The previous prime is 1373639. The next prime is 1373677. The reversal of 1373649 is 9463731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1373649 - 2⁷ = 1373521 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1373639) 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, 82 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (229944).

2^1373649 is an apocalyptic number.

It is an amenable number.

1373649 is a deficient number, since it is larger than the sum of its proper divisors (465903).

1373649 is a wasteful number, since it uses less digits than its factorization.

1373649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007.

The product of its digits is 13608, while the sum is 33.

The square root of 1373649 is about 1172.0277300474. The cubic root of 1373649 is about 111.1625732352.

The spelling of 1373649 in words is "one million, three hundred seventy-three thousand, six hundred forty-nine".