146640505 has 24 divisors (see below), whose sum is σ = 194737536. Its totient is φ = 105922080.

The previous prime is 146640497. The next prime is 146640551. The reversal of 146640505 is 505046641.

It is not a de Polignac number, because 146640505 - 2³ = 146640497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97872 + ... + 99358.

It is an arithmetic number, because the mean of its divisors is an integer number (8114064).

Almost surely, 2^146640505 is an apocalyptic number.

It is an amenable number.

146640505 is a deficient number, since it is larger than the sum of its proper divisors (48097031).

146640505 is a wasteful number, since it uses less digits than its factorization.

146640505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677 (or 1666 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 146640505 is about 12109.5212539555. The cubic root of 146640505 is about 527.3326348490.

The spelling of 146640505 in words is "one hundred forty-six million, six hundred forty thousand, five hundred five".