87653801 has 8 divisors (see below), whose sum is σ = 89051304. Its totient is φ = 86261760.

The previous prime is 87653789. The next prime is 87653809. The reversal of 87653801 is 10835678.

It can be written as a sum of positive squares in 4 ways, for example, as 37810201 + 49843600 = 6149^2 + 7060^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 87653801 - 2¹⁰ = 87652777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87653809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41081 + ... + 43161.

It is an arithmetic number, because the mean of its divisors is an integer number (11131413).

Almost surely, 2^87653801 is an apocalyptic number.

It is an amenable number.

87653801 is a deficient number, since it is larger than the sum of its proper divisors (1397503).

87653801 is a wasteful number, since it uses less digits than its factorization.

87653801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 87653801 is about 9362.3608667900. The cubic root of 87653801 is about 444.2119638988.

The spelling of 87653801 in words is "eighty-seven million, six hundred fifty-three thousand, eight hundred one".