87436801 has 4 divisors (see below), whose sum is σ = 88210692. Its totient is φ = 86662912.

The previous prime is 87436799. The next prime is 87436807. The reversal of 87436801 is 10863478.

It is a happy number.

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 4626801 + 82810000 = 2151^2 + 9100^2 .

It is a cyclic number.

It is not a de Polignac number, because 87436801 - 2¹ = 87436799 is a prime.

It is a super-2 number, since 2×87436801² = 15290388338227202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87436807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386776 + ... + 387001.

It is an arithmetic number, because the mean of its divisors is an integer number (22052673).

Almost surely, 2^87436801 is an apocalyptic number.

It is an amenable number.

87436801 is a deficient number, since it is larger than the sum of its proper divisors (773891).

87436801 is a wasteful number, since it uses less digits than its factorization.

87436801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773890.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 87436801 is about 9350.7647280851. The cubic root of 87436801 is about 443.8450900894.

It can be divided in two parts, 874 and 36801, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 87436801 in words is "eighty-seven million, four hundred thirty-six thousand, eight hundred one".