145717798 has 8 divisors (see below), whose sum is σ = 223660008. Its totient is φ = 71164464.

The previous prime is 145717777. The next prime is 145717807. The reversal of 145717798 is 897717541.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847111 + ... + 847282.

It is an arithmetic number, because the mean of its divisors is an integer number (27957501).

Almost surely, 2^145717798 is an apocalyptic number.

145717798 is a deficient number, since it is larger than the sum of its proper divisors (77942210).

145717798 is a wasteful number, since it uses less digits than its factorization.

145717798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694438.

The product of its digits is 493920, while the sum is 49.

The square root of 145717798 is about 12071.3627234045. The cubic root of 145717798 is about 526.2242606594.

The spelling of 145717798 in words is "one hundred forty-five million, seven hundred seventeen thousand, seven hundred ninety-eight".