87641433 has 80 divisors (see below), whose sum is σ = 156119040. Its totient is φ = 48405600.

The previous prime is 87641429. The next prime is 87641441. The reversal of 87641433 is 33414678.

87641433 is a `hidden beast` number, since 8 + 7 + 641 + 4 + 3 + 3 = 666.

It is not a de Polignac number, because 87641433 - 2² = 87641429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87641413) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 524716 + ... + 524882.

It is an arithmetic number, because the mean of its divisors is an integer number (1951488).

Almost surely, 2^87641433 is an apocalyptic number.

It is an amenable number.

87641433 is a deficient number, since it is larger than the sum of its proper divisors (68477607).

87641433 is a wasteful number, since it uses less digits than its factorization.

87641433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 231 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 87641433 is about 9361.7003263296. The cubic root of 87641433 is about 444.1910700644.

The spelling of 87641433 in words is "eighty-seven million, six hundred forty-one thousand, four hundred thirty-three".