647494 has 8 divisors (see below), whose sum is σ = 993960. Its totient is φ = 316176.

The previous prime is 647489. The next prime is 647503. The reversal of 647494 is 494746.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3679 + ... + 3850.

It is an arithmetic number, because the mean of its divisors is an integer number (124245).

2⁶⁴⁷⁴⁹⁴ is an apocalyptic number.

647494 is a deficient number, since it is larger than the sum of its proper divisors (346466).

647494 is a wasteful number, since it uses less digits than its factorization.

647494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574.

The product of its digits is 24192, while the sum is 34.

The square root of 647494 is about 804.6701187443. The cubic root of 647494 is about 86.5124443321.

The spelling of 647494 in words is "six hundred forty-seven thousand, four hundred ninety-four".