68090145 has 8 divisors (see below), whose sum is σ = 108944256. Its totient is φ = 36314736.

The previous prime is 68090119. The next prime is 68090147. The reversal of 68090145 is 54109086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68090145 - 2⁶ = 68090081 is a prime.

It is a super-2 number, since 2×68090145² = 9272535692242050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68090147) 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, 2269657 + ... + 2269686.

It is an arithmetic number, because the mean of its divisors is an integer number (13618032).

Almost surely, 2^68090145 is an apocalyptic number.

It is an amenable number.

68090145 is a deficient number, since it is larger than the sum of its proper divisors (40854111).

68090145 is a wasteful number, since it uses less digits than its factorization.

68090145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539351.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 68090145 is about 8251.6752844498. The cubic root of 68090145 is about 408.3457936871.

The spelling of 68090145 in words is "sixty-eight million, ninety thousand, one hundred forty-five".