87681703 has 4 divisors (see below), whose sum is σ = 90705240. Its totient is φ = 84658168.

The previous prime is 87681679. The next prime is 87681707. The reversal of 87681703 is 30718678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30718678 = 2 ⋅15359339.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87681703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87681707) 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, 1511725 + ... + 1511782.

It is an arithmetic number, because the mean of its divisors is an integer number (22676310).

Almost surely, 2^87681703 is an apocalyptic number.

87681703 is a deficient number, since it is larger than the sum of its proper divisors (3023537).

87681703 is a wasteful number, since it uses less digits than its factorization.

87681703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023536.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 87681703 is about 9363.8508638273. The cubic root of 87681703 is about 444.2590928203.

The spelling of 87681703 in words is "eighty-seven million, six hundred eighty-one thousand, seven hundred three".