87130077 has 4 divisors (see below), whose sum is σ = 116173440. Its totient is φ = 58086716.

The previous prime is 87130037. The next prime is 87130081. The reversal of 87130077 is 77003178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87130077 - 2¹¹ = 87128029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87130027) 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, 14521677 + ... + 14521682.

It is an arithmetic number, because the mean of its divisors is an integer number (29043360).

Almost surely, 2^87130077 is an apocalyptic number.

It is an amenable number.

87130077 is a deficient number, since it is larger than the sum of its proper divisors (29043363).

87130077 is a wasteful number, since it uses less digits than its factorization.

87130077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29043362.

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 87130077 is about 9334.3493077986. The cubic root of 87130077 is about 443.3254864473.

The spelling of 87130077 in words is "eighty-seven million, one hundred thirty thousand, seventy-seven".