87212603 has 16 divisors (see below), whose sum is σ = 94080000. Its totient is φ = 80600832.

The previous prime is 87212581. The next prime is 87212639. The reversal of 87212603 is 30621278.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87212603 - 2⁶ = 87212539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87212303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145298 + ... + 145896.

It is an arithmetic number, because the mean of its divisors is an integer number (5880000).

Almost surely, 2^87212603 is an apocalyptic number.

87212603 is a deficient number, since it is larger than the sum of its proper divisors (6867397).

87212603 is a wasteful number, since it uses less digits than its factorization.

87212603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 87212603 is about 9338.7688160699. The cubic root of 87212603 is about 443.4654087931.

The spelling of 87212603 in words is "eighty-seven million, two hundred twelve thousand, six hundred three".