87706485 has 24 divisors (see below), whose sum is σ = 160968600. Its totient is φ = 44024832.

The previous prime is 87706483. The next prime is 87706517. The reversal of 87706485 is 58460778.

It can be written as a sum of positive squares in 4 ways, for example, as 12068676 + 75637809 = 3474^2 + 8697^2 .

It is not a de Polignac number, because 87706485 - 2¹ = 87706483 is a prime.

It is a super-2 number, since 2×87706485² = 15384855022110450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87706485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87706483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56560 + ... + 58089.

It is an arithmetic number, because the mean of its divisors is an integer number (6707025).

Almost surely, 2^87706485 is an apocalyptic number.

87706485 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87706485 is a deficient number, since it is larger than the sum of its proper divisors (73262115).

87706485 is a wasteful number, since it uses less digits than its factorization.

87706485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114677 (or 114674 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 87706485 is about 9365.1740507051. The cubic root of 87706485 is about 444.3009434055.

The spelling of 87706485 in words is "eighty-seven million, seven hundred six thousand, four hundred eighty-five".