87453684 has 18 divisors (see below), whose sum is σ = 221063570. Its totient is φ = 29151216.

The previous prime is 87453683. The next prime is 87453719. The reversal of 87453684 is 48635478.

It can be written as a sum of positive squares in only one way, i.e., 46621584 + 40832100 = 6828^2 + 6390^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87453683) 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 5 ways as a sum of consecutive naturals, for example, 1214599 + ... + 1214670.

Almost surely, 2^87453684 is an apocalyptic number.

It is an amenable number.

87453684 is an abundant number, since it is smaller than the sum of its proper divisors (133609886).

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

87453684 is a wasteful number, since it uses less digits than its factorization.

87453684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429279 (or 2429274 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 87453684 is about 9351.6674448999. The cubic root of 87453684 is about 443.8736553096.

The spelling of 87453684 in words is "eighty-seven million, four hundred fifty-three thousand, six hundred eighty-four".