87210701 has 2 divisors, whose sum is σ = 87210702. Its totient is φ = 87210700.

The previous prime is 87210679. The next prime is 87210737. The reversal of 87210701 is 10701278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81090025 + 6120676 = 9005^2 + 2474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87210701 is a prime.

It is a super-2 number, since 2×87210701² = 15211412737822802, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87210401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43605350 + 43605351.

It is an arithmetic number, because the mean of its divisors is an integer number (43605351).

Almost surely, 2^87210701 is an apocalyptic number.

It is an amenable number.

87210701 is a deficient number, since it is larger than the sum of its proper divisors (1).

87210701 is an equidigital number, since it uses as much as digits as its factorization.

87210701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 87210701 is about 9338.6669819627. Note that the first 3 decimals coincide. The cubic root of 87210701 is about 443.4621849572.

Adding to 87210701 its reverse (10701278), we get a palindrome (97911979).

The spelling of 87210701 in words is "eighty-seven million, two hundred ten thousand, seven hundred one".