87677901 has 24 divisors (see below), whose sum is σ = 130670904. Its totient is φ = 56609280.

The previous prime is 87677897. The next prime is 87677911. The reversal of 87677901 is 10977678.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15444900 + 72233001 = 3930^2 + 8499^2 .

It is not a de Polignac number, because 87677901 - 2² = 87677897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87677911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93105 + ... + 94041.

It is an arithmetic number, because the mean of its divisors is an integer number (5444621).

Almost surely, 2^87677901 is an apocalyptic number.

It is an amenable number.

87677901 is a deficient number, since it is larger than the sum of its proper divisors (42993003).

87677901 is a wasteful number, since it uses less digits than its factorization.

87677901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 87677901 is about 9363.6478468597. The cubic root of 87677901 is about 444.2526714978.

The spelling of 87677901 in words is "eighty-seven million, six hundred seventy-seven thousand, nine hundred one".