145486687 has 4 divisors (see below), whose sum is σ = 145628560. Its totient is φ = 145344816.

The previous prime is 145486669. The next prime is 145486703. The reversal of 145486687 is 786684541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786684541 = 83 ⋅9478127.

It is a cyclic number.

It is not a de Polignac number, because 145486687 - 2¹¹ = 145484639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145486687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145486657) 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, 69387 + ... + 71452.

It is an arithmetic number, because the mean of its divisors is an integer number (36407140).

Almost surely, 2^145486687 is an apocalyptic number.

145486687 is a deficient number, since it is larger than the sum of its proper divisors (141873).

145486687 is a wasteful number, since it uses less digits than its factorization.

145486687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141872.

The product of its digits is 1290240, while the sum is 49.

The square root of 145486687 is about 12061.7862275867. The cubic root of 145486687 is about 525.9459131305.

The spelling of 145486687 in words is "one hundred forty-five million, four hundred eighty-six thousand, six hundred eighty-seven".