87261837 has 16 divisors (see below), whose sum is σ = 126208320. Its totient is φ = 53309952.

The previous prime is 87261829. The next prime is 87261847. The reversal of 87261837 is 73816278.

It is not a de Polignac number, because 87261837 - 2³ = 87261829 is a prime.

It is a super-3 number, since 3×87261837³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87261847) 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, 2628 + ... + 13469.

It is an arithmetic number, because the mean of its divisors is an integer number (7888020).

Almost surely, 2^87261837 is an apocalyptic number.

It is an amenable number.

87261837 is a deficient number, since it is larger than the sum of its proper divisors (38946483).

87261837 is a wasteful number, since it uses less digits than its factorization.

87261837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16252.

The product of its digits is 112896, while the sum is 42.

The square root of 87261837 is about 9341.4044447289. The cubic root of 87261837 is about 443.5488427155.

The spelling of 87261837 in words is "eighty-seven million, two hundred sixty-one thousand, eight hundred thirty-seven".