68687480 has 64 divisors (see below), whose sum is σ = 165745440. Its totient is φ = 25526272.

The previous prime is 68687467. The next prime is 68687501. The reversal of 68687480 is 8478686.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55832 + ... + 57048.

Almost surely, 2^68687480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68687480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82872720).

68687480 is an abundant number, since it is smaller than the sum of its proper divisors (97057960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68687480 is a wasteful number, since it uses less digits than its factorization.

68687480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 68687480 is about 8287.7910205313. The cubic root of 68687480 is about 409.5364183280.

The spelling of 68687480 in words is "sixty-eight million, six hundred eighty-seven thousand, four hundred eighty".