87669101 has 4 divisors (see below), whose sum is σ = 94412892. Its totient is φ = 80925312.

The previous prime is 87669089. The next prime is 87669121. The reversal of 87669101 is 10196678.

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 42120100 + 45549001 = 6490^2 + 6749^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87669101 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 (87669121) 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, 3371876 + ... + 3371901.

It is an arithmetic number, because the mean of its divisors is an integer number (23603223).

Almost surely, 2^87669101 is an apocalyptic number.

It is an amenable number.

87669101 is a deficient number, since it is larger than the sum of its proper divisors (6743791).

87669101 is a wasteful number, since it uses less digits than its factorization.

87669101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743790.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 87669101 is about 9363.1779327320. The cubic root of 87669101 is about 444.2378081770.

The spelling of 87669101 in words is "eighty-seven million, six hundred sixty-nine thousand, one hundred one".