87622642 has 24 divisors (see below), whose sum is σ = 139779756. Its totient is φ = 41187744.

The previous prime is 87622637. The next prime is 87622649. The reversal of 87622642 is 24622678.

It can be written as a sum of positive squares in 2 ways, for example, as 76055841 + 11566801 = 8721^2 + 3401^2 .

It is not an unprimeable number, because it can be changed into a prime (87622649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112968 + ... + 113740.

Almost surely, 2^87622642 is an apocalyptic number.

87622642 is a deficient number, since it is larger than the sum of its proper divisors (52157114).

87622642 is a wasteful number, since it uses less digits than its factorization.

87622642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 951 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 87622642 is about 9360.6966621080. The cubic root of 87622642 is about 444.1593217968.

The spelling of 87622642 in words is "eighty-seven million, six hundred twenty-two thousand, six hundred forty-two".