647954 has 8 divisors (see below), whose sum is σ = 979968. Its totient is φ = 321300.

The previous prime is 647953. The next prime is 647963. The reversal of 647954 is 459746.

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

It is a super-2 number, since 2×647954² = 839688772232, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647954.

It is not an unprimeable number, because it can be changed into a prime (647951) 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, 1022 + ... + 1529.

It is an arithmetic number, because the mean of its divisors is an integer number (122496).

2⁶⁴⁷⁹⁵⁴ is an apocalyptic number.

647954 is a deficient number, since it is larger than the sum of its proper divisors (332014).

647954 is a wasteful number, since it uses less digits than its factorization.

647954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680.

The product of its digits is 30240, while the sum is 35.

The square root of 647954 is about 804.9558994131. The cubic root of 647954 is about 86.5329265317.

It can be divided in two parts, 6479 and 54, that multiplied together give a triangular number (349866 = T₈₃₆).

The spelling of 647954 in words is "six hundred forty-seven thousand, nine hundred fifty-four".