87143658 has 48 divisors (see below), whose sum is σ = 208247904. Its totient is φ = 24222240.

The previous prime is 87143657. The next prime is 87143659. The reversal of 87143658 is 85634178.

It is an interprime number because it is at equal distance from previous prime (87143657) and next prime (87143659).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (87143657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6873 + ... + 14883.

It is an arithmetic number, because the mean of its divisors is an integer number (4338498).

Almost surely, 2^87143658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87143658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104123952).

87143658 is an abundant number, since it is smaller than the sum of its proper divisors (121104246).

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

87143658 is a wasteful number, since it uses less digits than its factorization.

87143658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8067 (or 8060 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 87143658 is about 9335.0767538355. The cubic root of 87143658 is about 443.3485190243.

The spelling of 87143658 in words is "eighty-seven million, one hundred forty-three thousand, six hundred fifty-eight".