145668047 has 16 divisors (see below), whose sum is σ = 171452160. Its totient is φ = 121165632.

The previous prime is 145668023. The next prime is 145668049. The reversal of 145668047 is 740866541.

It is not a de Polignac number, because 145668047 - 2²² = 141473743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145667995 and 145668013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145668049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47579 + ... + 50547.

It is an arithmetic number, because the mean of its divisors is an integer number (10715760).

Almost surely, 2^145668047 is an apocalyptic number.

145668047 is a deficient number, since it is larger than the sum of its proper divisors (25784113).

145668047 is a wasteful number, since it uses less digits than its factorization.

145668047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 145668047 is about 12069.3018439345. The cubic root of 145668047 is about 526.1643659781.

The spelling of 145668047 in words is "one hundred forty-five million, six hundred sixty-eight thousand, forty-seven".