87637742 has 16 divisors (see below), whose sum is σ = 133948032. Its totient is φ = 42993720.

The previous prime is 87637727. The next prime is 87637789. The reversal of 87637742 is 24773678.

It is a junction number, because it is equal to n+sod(n) for n = 87637693 and 87637702.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36767 + ... + 39077.

It is an arithmetic number, because the mean of its divisors is an integer number (8371752).

Almost surely, 2^87637742 is an apocalyptic number.

87637742 is a deficient number, since it is larger than the sum of its proper divisors (46310290).

87637742 is a wasteful number, since it uses less digits than its factorization.

87637742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663.

The product of its digits is 395136, while the sum is 44.

The square root of 87637742 is about 9361.5031912615. The cubic root of 87637742 is about 444.1848343066.

The spelling of 87637742 in words is "eighty-seven million, six hundred thirty-seven thousand, seven hundred forty-two".