68602240 has 64 divisors (see below), whose sum is σ = 187443360. Its totient is φ = 23519232.

The previous prime is 68602213. The next prime is 68602241. The reversal of 68602240 is 4220686.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 68602199 and 68602208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68602241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3177 + ... + 12136.

Almost surely, 2^68602240 is an apocalyptic number.

It is an amenable number.

68602240 is an abundant number, since it is smaller than the sum of its proper divisors (118841120).

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

68602240 is a wasteful number, since it uses less digits than its factorization.

68602240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15339 (or 15327 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 68602240 is about 8282.6469199164. The cubic root of 68602240 is about 409.3669389474.

It can be divided in two parts, 6860 and 2240, that multiplied together give a square (15366400 = 3920²).

The spelling of 68602240 in words is "sixty-eight million, six hundred two thousand, two hundred forty".