133623487 has 2 divisors, whose sum is σ = 133623488. Its totient is φ = 133623486.

The previous prime is 133623461. The next prime is 133623493. The reversal of 133623487 is 784326331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133623487 - 2¹⁵ = 133590719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133623407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66811743 + 66811744.

It is an arithmetic number, because the mean of its divisors is an integer number (66811744).

Almost surely, 2^133623487 is an apocalyptic number.

133623487 is a deficient number, since it is larger than the sum of its proper divisors (1).

133623487 is an equidigital number, since it uses as much as digits as its factorization.

133623487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 133623487 is about 11559.5625782293. The cubic root of 133623487 is about 511.2432655940.

The spelling of 133623487 in words is "one hundred thirty-three million, six hundred twenty-three thousand, four hundred eighty-seven".