145986864 has 20 divisors (see below), whose sum is σ = 377132856. Its totient is φ = 48662272.

The previous prime is 145986859. The next prime is 145986889. The reversal of 145986864 is 468689541.

It is a super-3 number, since 3×145986864³ (a number of 25 digits) contains 333 as substring.

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, 1520649 + ... + 1520744.

Almost surely, 2^145986864 is an apocalyptic number.

It is an amenable number.

145986864 is an abundant number, since it is smaller than the sum of its proper divisors (231145992).

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

145986864 is a wasteful number, since it uses less digits than its factorization.

145986864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041404 (or 3041398 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 145986864 is about 12082.5023898198. The cubic root of 145986864 is about 526.5479502400.

The spelling of 145986864 in words is "one hundred forty-five million, nine hundred eighty-six thousand, eight hundred sixty-four".