153540666 has 12 divisors (see below), whose sum is σ = 332671482. Its totient is φ = 51180216.

The previous prime is 153540661. The next prime is 153540677. The reversal of 153540666 is 666045351.

It can be written as a sum of positive squares in only one way, i.e., 129481641 + 24059025 = 11379^2 + 4905^2 .

It is a super-2 number, since 2×153540666² = 47149472231447112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 153540666.

It is not an unprimeable number, because it can be changed into a prime (153540661) 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 5 ways as a sum of consecutive naturals, for example, 4265001 + ... + 4265036.

Almost surely, 2^153540666 is an apocalyptic number.

153540666 is an abundant number, since it is smaller than the sum of its proper divisors (179130816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

153540666 is a wasteful number, since it uses less digits than its factorization.

153540666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8530045 (or 8530042 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 153540666 is about 12391.1527308802. The cubic root of 153540666 is about 535.4773926174.

The spelling of 153540666 in words is "one hundred fifty-three million, five hundred forty thousand, six hundred sixty-six".