145709688 has 32 divisors (see below), whose sum is σ = 376837200. Its totient is φ = 46894848.

The previous prime is 145709687. The next prime is 145709693. The reversal of 145709688 is 886907541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145709687) 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, 103981 + ... + 105372.

Almost surely, 2^145709688 is an apocalyptic number.

It is an amenable number.

145709688 is an abundant number, since it is smaller than the sum of its proper divisors (231127512).

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

145709688 is a wasteful number, since it uses less digits than its factorization.

145709688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209391 (or 209387 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 145709688 is about 12071.0267997383. The cubic root of 145709688 is about 526.2144980498.

The spelling of 145709688 in words is "one hundred forty-five million, seven hundred nine thousand, six hundred eighty-eight".