133461864 has 32 divisors (see below), whose sum is σ = 370728000. Its totient is φ = 44487216.

The previous prime is 133461859. The next prime is 133461869. The reversal of 133461864 is 468164331.

It is a happy number.

133461864 is a `hidden beast` number, since 1 + 3 + 34 + 618 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (133461859) and next prime (133461869).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (133461869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308724 + ... + 309155.

It is an arithmetic number, because the mean of its divisors is an integer number (11585250).

Almost surely, 2^133461864 is an apocalyptic number.

It is an amenable number.

133461864 is an abundant number, since it is smaller than the sum of its proper divisors (237266136).

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

133461864 is a wasteful number, since it uses less digits than its factorization.

133461864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617894 (or 617884 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 133461864 is about 11552.5695842960. The cubic root of 133461864 is about 511.0370593129.

The spelling of 133461864 in words is "one hundred thirty-three million, four hundred sixty-one thousand, eight hundred sixty-four".