145636646 has 8 divisors (see below), whose sum is σ = 222036384. Its totient is φ = 71624520.

The previous prime is 145636639. The next prime is 145636651. The reversal of 145636646 is 646636541.

145636646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 596750 + ... + 596993.

It is an arithmetic number, because the mean of its divisors is an integer number (27754548).

Almost surely, 2^145636646 is an apocalyptic number.

145636646 is a deficient number, since it is larger than the sum of its proper divisors (76399738).

145636646 is a wasteful number, since it uses less digits than its factorization.

145636646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193806.

The product of its digits is 311040, while the sum is 41.

The square root of 145636646 is about 12068.0009115015. Note that the first 3 decimals coincide. The cubic root of 145636646 is about 526.1265556393.

The spelling of 145636646 in words is "one hundred forty-five million, six hundred thirty-six thousand, six hundred forty-six".