87646077 has 32 divisors (see below), whose sum is σ = 136800000. Its totient is φ = 55351296.

The previous prime is 87646073. The next prime is 87646079. The reversal of 87646077 is 77064678.

It is not a de Polignac number, because 87646077 - 2² = 87646073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87646073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69549 + ... + 70797.

It is an arithmetic number, because the mean of its divisors is an integer number (4275000).

Almost surely, 2^87646077 is an apocalyptic number.

It is an amenable number.

87646077 is a deficient number, since it is larger than the sum of its proper divisors (49153923).

87646077 is a wasteful number, since it uses less digits than its factorization.

87646077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1388 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 87646077 is about 9361.9483549099. The cubic root of 87646077 is about 444.1989156189.

It can be divided in two parts, 8764 and 6077, that added together give a palindrome (14841).

The spelling of 87646077 in words is "eighty-seven million, six hundred forty-six thousand, seventy-seven".