87989701 has 4 divisors (see below), whose sum is σ = 88010272. Its totient is φ = 87969132.

The previous prime is 87989677. The next prime is 87989719. The reversal of 87989701 is 10798978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87989701 - 2⁹ = 87989189 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 (87989101) 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, 1185 + ... + 13318.

It is an arithmetic number, because the mean of its divisors is an integer number (22002568).

Almost surely, 2^87989701 is an apocalyptic number.

It is an amenable number.

87989701 is a deficient number, since it is larger than the sum of its proper divisors (20571).

87989701 is a wasteful number, since it uses less digits than its factorization.

87989701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20570.

The product of its (nonzero) digits is 254016, while the sum is 49.

The square root of 87989701 is about 9380.2825650404. The cubic root of 87989701 is about 444.7786653377.

The spelling of 87989701 in words is "eighty-seven million, nine hundred eighty-nine thousand, seven hundred one".