145688047 has 8 divisors (see below), whose sum is σ = 149566032. Its totient is φ = 141825600.

The previous prime is 145688027. The next prime is 145688057. The reversal of 145688047 is 740886541.

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

It is a cyclic number.

It is not a de Polignac number, because 145688047 - 2²³ = 137299439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145687994 and 145688012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145688017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16513 + ... + 23749.

It is an arithmetic number, because the mean of its divisors is an integer number (18695754).

Almost surely, 2^145688047 is an apocalyptic number.

145688047 is a deficient number, since it is larger than the sum of its proper divisors (3877985).

145688047 is an equidigital number, since it uses as much as digits as its factorization.

145688047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7769.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 145688047 is about 12070.1303638362. The cubic root of 145688047 is about 526.1884453969.

The spelling of 145688047 in words is "one hundred forty-five million, six hundred eighty-eight thousand, forty-seven".