87401823 has 16 divisors (see below), whose sum is σ = 119429856. Its totient is φ = 56833920.

The previous prime is 87401819. The next prime is 87401851. The reversal of 87401823 is 32810478.

It is not a de Polignac number, because 87401823 - 2² = 87401819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87401813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27261 + ... + 30297.

It is an arithmetic number, because the mean of its divisors is an integer number (7464366).

Almost surely, 2^87401823 is an apocalyptic number.

87401823 is a deficient number, since it is larger than the sum of its proper divisors (32028033).

87401823 is a wasteful number, since it uses less digits than its factorization.

87401823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 87401823 is about 9348.8942126863. The cubic root of 87401823 is about 443.7858973010.

The spelling of 87401823 in words is "eighty-seven million, four hundred one thousand, eight hundred twenty-three".