87340961 has 4 divisors (see below), whose sum is σ = 87509124. Its totient is φ = 87172800.

The previous prime is 87340949. The next prime is 87340963. The reversal of 87340961 is 16904378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16904378 = 2 ⋅8452189.

It can be written as a sum of positive squares in 2 ways, for example, as 23580736 + 63760225 = 4856^2 + 7985^2 .

It is a cyclic number.

It is not a de Polignac number, because 87340961 - 2¹⁰ = 87339937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87340963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83300 + ... + 84341.

It is an arithmetic number, because the mean of its divisors is an integer number (21877281).

Almost surely, 2^87340961 is an apocalyptic number.

It is an amenable number.

87340961 is a deficient number, since it is larger than the sum of its proper divisors (168163).

87340961 is a wasteful number, since it uses less digits than its factorization.

87340961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168162.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 87340961 is about 9345.6386084633. The cubic root of 87340961 is about 443.6828637175.

The spelling of 87340961 in words is "eighty-seven million, three hundred forty thousand, nine hundred sixty-one".