87822037 has 2 divisors, whose sum is σ = 87822038. Its totient is φ = 87822036.

The previous prime is 87822013. The next prime is 87822043. The reversal of 87822037 is 73022878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64144081 + 23677956 = 8009^2 + 4866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87822037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87821987 and 87822005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87822437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43911018 + 43911019.

It is an arithmetic number, because the mean of its divisors is an integer number (43911019).

Almost surely, 2^87822037 is an apocalyptic number.

It is an amenable number.

87822037 is a deficient number, since it is larger than the sum of its proper divisors (1).

87822037 is an equidigital number, since it uses as much as digits as its factorization.

87822037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 87822037 is about 9371.3412593929. The cubic root of 87822037 is about 444.4959777583.

The spelling of 87822037 in words is "eighty-seven million, eight hundred twenty-two thousand, thirty-seven".