87266643 has 8 divisors (see below), whose sum is σ = 120109056. Its totient is φ = 56301000.

The previous prime is 87266611. The next prime is 87266659. The reversal of 87266643 is 34666278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87266643 - 2⁵ = 87266611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87266595 and 87266604.

It is not an unprimeable number, because it can be changed into a prime (87266603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469083 + ... + 469268.

It is an arithmetic number, because the mean of its divisors is an integer number (15013632).

Almost surely, 2^87266643 is an apocalyptic number.

87266643 is a deficient number, since it is larger than the sum of its proper divisors (32842413).

87266643 is a wasteful number, since it uses less digits than its factorization.

87266643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938385.

The product of its digits is 290304, while the sum is 42.

The square root of 87266643 is about 9341.6616830198. The cubic root of 87266643 is about 443.5569854756.

The spelling of 87266643 in words is "eighty-seven million, two hundred sixty-six thousand, six hundred forty-three".