146249647 has 4 divisors (see below), whose sum is σ = 146587840. Its totient is φ = 145911456.

The previous prime is 146249573. The next prime is 146249671. The reversal of 146249647 is 746942641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146249647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146249687) 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, 168447 + ... + 169312.

It is an arithmetic number, because the mean of its divisors is an integer number (36646960).

Almost surely, 2^146249647 is an apocalyptic number.

146249647 is a deficient number, since it is larger than the sum of its proper divisors (338193).

146249647 is an equidigital number, since it uses as much as digits as its factorization.

146249647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338192.

The product of its digits is 290304, while the sum is 43.

The square root of 146249647 is about 12093.3720276852. The cubic root of 146249647 is about 526.8636976215.

The spelling of 146249647 in words is "one hundred forty-six million, two hundred forty-nine thousand, six hundred forty-seven".