648137 has 8 divisors (see below), whose sum is σ = 755136. Its totient is φ = 544752.

The previous prime is 648133. The next prime is 648173. The reversal of 648137 is 731846.

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

It is a cyclic number.

It is not a de Polignac number, because 648137 - 2² = 648133 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503 + ... + 1244.

It is an arithmetic number, because the mean of its divisors is an integer number (94392).

2⁶⁴⁸¹³⁷ is an apocalyptic number.

It is an amenable number.

648137 is a deficient number, since it is larger than the sum of its proper divisors (106999).

648137 is a wasteful number, since it uses less digits than its factorization.

648137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807.

The product of its digits is 4032, while the sum is 29.

The square root of 648137 is about 805.0695622119. The cubic root of 648137 is about 86.5410721897.

The spelling of 648137 in words is "six hundred forty-eight thousand, one hundred thirty-seven".