87434737 has 8 divisors (see below), whose sum is σ = 96705896. Its totient is φ = 78527232.

The previous prime is 87434731. The next prime is 87434759. The reversal of 87434737 is 73743478.

It can be written as a sum of positive squares in 4 ways, for example, as 9006001 + 78428736 = 3001^2 + 8856^2 .

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 87434737 - 2¹¹ = 87432689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87434693 and 87434702.

It is not an unprimeable number, because it can be changed into a prime (87434731) 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, 90408 + ... + 91369.

It is an arithmetic number, because the mean of its divisors is an integer number (12088237).

Almost surely, 2^87434737 is an apocalyptic number.

It is an amenable number.

87434737 is a deficient number, since it is larger than the sum of its proper divisors (9271159).

87434737 is a wasteful number, since it uses less digits than its factorization.

87434737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181827.

The product of its digits is 395136, while the sum is 43.

The square root of 87434737 is about 9350.6543621289. The cubic root of 87434737 is about 443.8415976489.

The spelling of 87434737 in words is "eighty-seven million, four hundred thirty-four thousand, seven hundred thirty-seven".