145709686 has 8 divisors (see below), whose sum is σ = 231421320. Its totient is φ = 68569248.

The previous prime is 145709677. The next prime is 145709687. The reversal of 145709686 is 686907541.

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

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 3 ways as a sum of consecutive naturals, for example, 2142756 + ... + 2142823.

It is an arithmetic number, because the mean of its divisors is an integer number (28927665).

Almost surely, 2^145709686 is an apocalyptic number.

145709686 is a deficient number, since it is larger than the sum of its proper divisors (85711634).

145709686 is a wasteful number, since it uses less digits than its factorization.

145709686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285598.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 145709686 is about 12071.0267168953. The cubic root of 145709686 is about 526.2144956422.

The spelling of 145709686 in words is "one hundred forty-five million, seven hundred nine thousand, six hundred eighty-six".