68479620 has 96 divisors (see below), whose sum is σ = 215986176. Its totient is φ = 16060800.

The previous prime is 68479613. The next prime is 68479669. The reversal of 68479620 is 2697486.

68479620 = 154² + 155² + ... + 593².

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18787 + ... + 22133.

It is an arithmetic number, because the mean of its divisors is an integer number (2249856).

Almost surely, 2^68479620 is an apocalyptic number.

68479620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68479620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107993088).

68479620 is an abundant number, since it is smaller than the sum of its proper divisors (147506556).

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

68479620 is a wasteful number, since it uses less digits than its factorization.

68479620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401 (or 3399 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 68479620 is about 8275.2413862074. The cubic root of 68479620 is about 409.1228919552.

The spelling of 68479620 in words is "sixty-eight million, four hundred seventy-nine thousand, six hundred twenty".