87603797 has 4 divisors (see below), whose sum is σ = 87622956. Its totient is φ = 87584640.

The previous prime is 87603793. The next prime is 87603823. The reversal of 87603797 is 79730678.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19061956 + 68541841 = 4366^2 + 8279^2 .

It is a cyclic number.

It is not a de Polignac number, because 87603797 - 2² = 87603793 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 (87603793) 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, 1733 + ... + 13349.

It is an arithmetic number, because the mean of its divisors is an integer number (21905739).

Almost surely, 2^87603797 is an apocalyptic number.

It is an amenable number.

87603797 is a deficient number, since it is larger than the sum of its proper divisors (19159).

87603797 is a wasteful number, since it uses less digits than its factorization.

87603797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19158.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 87603797 is about 9359.6900055504. The cubic root of 87603797 is about 444.1274777348.

The spelling of 87603797 in words is "eighty-seven million, six hundred three thousand, seven hundred ninety-seven".