145631727 has 6 divisors (see below), whose sum is σ = 210356952. Its totient is φ = 97087812.

The previous prime is 145631723. The next prime is 145631737. The reversal of 145631727 is 727136541.

It is a happy number.

145631727 is a `hidden beast` number, since 14 + 5 + 631 + 7 + 2 + 7 = 666.

It is not a de Polignac number, because 145631727 - 2² = 145631723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145631691 and 145631700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145631723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8090643 + ... + 8090660.

It is an arithmetic number, because the mean of its divisors is an integer number (35059492).

Almost surely, 2^145631727 is an apocalyptic number.

145631727 is a deficient number, since it is larger than the sum of its proper divisors (64725225).

145631727 is a wasteful number, since it uses less digits than its factorization.

145631727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16181309 (or 16181306 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 145631727 is about 12067.7971063488. The cubic root of 145631727 is about 526.1206321173.

It can be divided in two parts, 14563 and 1727, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 145631727 in words is "one hundred forty-five million, six hundred thirty-one thousand, seven hundred twenty-seven".