87454643 has 4 divisors (see below), whose sum is σ = 89818320. Its totient is φ = 85090968.

The previous prime is 87454637. The next prime is 87454649. The reversal of 87454643 is 34645478.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (87454637) and next prime (87454649).

It is a cyclic number.

It is not a de Polignac number, because 87454643 - 2⁸ = 87454387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87454643.

It is not an unprimeable number, because it can be changed into a prime (87454649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181783 + ... + 1181856.

It is an arithmetic number, because the mean of its divisors is an integer number (22454580).

Almost surely, 2^87454643 is an apocalyptic number.

87454643 is a deficient number, since it is larger than the sum of its proper divisors (2363677).

87454643 is a wasteful number, since it uses less digits than its factorization.

87454643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363676.

The product of its digits is 322560, while the sum is 41.

The square root of 87454643 is about 9351.7187190377. The cubic root of 87454643 is about 443.8752777809.

The spelling of 87454643 in words is "eighty-seven million, four hundred fifty-four thousand, six hundred forty-three".