247964 has 6 divisors (see below), whose sum is σ = 433944. Its totient is φ = 123980.

The previous prime is 247957. The next prime is 247991. The reversal of 247964 is 469742.

247964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247964² = 122972290592, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 247964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30992 + ... + 30999.

It is an arithmetic number, because the mean of its divisors is an integer number (72324).

2²⁴⁷⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

247964 is a deficient number, since it is larger than the sum of its proper divisors (185980).

247964 is a wasteful number, since it uses less digits than its factorization.

247964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61995 (or 61993 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 247964 is about 497.9598377379. The cubic root of 247964 is about 62.8245728549.

The spelling of 247964 in words is "two hundred forty-seven thousand, nine hundred sixty-four".