87720854 has 8 divisors (see below), whose sum is σ = 141702960. Its totient is φ = 40486536.

The previous prime is 87720851. The next prime is 87720863. The reversal of 87720854 is 45802778.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87720851) 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 3 ways as a sum of consecutive naturals, for example, 1686914 + ... + 1686965.

It is an arithmetic number, because the mean of its divisors is an integer number (17712870).

Almost surely, 2^87720854 is an apocalyptic number.

87720854 is a deficient number, since it is larger than the sum of its proper divisors (53982106).

87720854 is a wasteful number, since it uses less digits than its factorization.

87720854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373894.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 87720854 is about 9365.9411700053. The cubic root of 87720854 is about 444.3252054338.

The spelling of 87720854 in words is "eighty-seven million, seven hundred twenty thousand, eight hundred fifty-four".