87646036 has 6 divisors (see below), whose sum is σ = 153380570. Its totient is φ = 43823016.

The previous prime is 87646003. The next prime is 87646037. The reversal of 87646036 is 63064678.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 38365636 = 7020^2 + 6194^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87646036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87646037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10955751 + ... + 10955758.

Almost surely, 2^87646036 is an apocalyptic number.

It is an amenable number.

87646036 is a deficient number, since it is larger than the sum of its proper divisors (65734534).

87646036 is a wasteful number, since it uses less digits than its factorization.

87646036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21911513 (or 21911511 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 87646036 is about 9361.9461651945. The cubic root of 87646036 is about 444.1988463548.

The spelling of 87646036 in words is "eighty-seven million, six hundred forty-six thousand, thirty-six".