68147620 has 24 divisors (see below), whose sum is σ = 149333184. Its totient is φ = 26073696.

The previous prime is 68147609. The next prime is 68147633. The reversal of 68147620 is 2674186.

It is a super-2 number, since 2×68147620² = 9288196223328800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73614 + ... + 74533.

It is an arithmetic number, because the mean of its divisors is an integer number (6222216).

Almost surely, 2^68147620 is an apocalyptic number.

It is an amenable number.

68147620 is an abundant number, since it is smaller than the sum of its proper divisors (81185564).

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

68147620 is a wasteful number, since it uses less digits than its factorization.

68147620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148179 (or 148177 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 68147620 is about 8255.1571759719. The cubic root of 68147620 is about 408.4606564864.

The spelling of 68147620 in words is "sixty-eight million, one hundred forty-seven thousand, six hundred twenty".