68487964 has 6 divisors (see below), whose sum is σ = 119853944. Its totient is φ = 34243980.

The previous prime is 68487961. The next prime is 68488051. The reversal of 68487964 is 46978486.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68487961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8560992 + ... + 8560999.

Almost surely, 2^68487964 is an apocalyptic number.

It is an amenable number.

68487964 is a deficient number, since it is larger than the sum of its proper divisors (51365980).

68487964 is a wasteful number, since it uses less digits than its factorization.

68487964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17121995 (or 17121993 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 68487964 is about 8275.7455253288. The cubic root of 68487964 is about 409.1395080071.

The spelling of 68487964 in words is "sixty-eight million, four hundred eighty-seven thousand, nine hundred sixty-four".