145540647 has 48 divisors (see below), whose sum is σ = 255378240. Its totient is φ = 78091776.

The previous prime is 145540639. The next prime is 145540649. The reversal of 145540647 is 746045541.

145540647 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 4 + 0 + 647 = 666.

It is not a de Polignac number, because 145540647 - 2³ = 145540639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145540649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66523 + ... + 68675.

It is an arithmetic number, because the mean of its divisors is an integer number (5320380).

Almost surely, 2^145540647 is an apocalyptic number.

145540647 is a deficient number, since it is larger than the sum of its proper divisors (109837593).

145540647 is a wasteful number, since it uses less digits than its factorization.

145540647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232 (or 2229 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 145540647 is about 12064.0228365168. The cubic root of 145540647 is about 526.0109283199.

The spelling of 145540647 in words is "one hundred forty-five million, five hundred forty thousand, six hundred forty-seven".