87277648 has 20 divisors (see below), whose sum is σ = 174556288. Its totient is φ = 42230880.

The previous prime is 87277639. The next prime is 87277649. The reversal of 87277648 is 84677278.

It is a happy number.

87277648 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87277649) 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, 87486 + ... + 88477.

Almost surely, 2^87277648 is an apocalyptic number.

It is an amenable number.

87277648 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87277648 is a wasteful number, since it uses less digits than its factorization.

87277648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176002 (or 175996 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 49.

The square root of 87277648 is about 9342.2506924188. The cubic root of 87277648 is about 443.5756300163.

The spelling of 87277648 in words is "eighty-seven million, two hundred seventy-seven thousand, six hundred forty-eight".