87427937 has 2 divisors, whose sum is σ = 87427938. Its totient is φ = 87427936.

The previous prime is 87427931. The next prime is 87427961. The reversal of 87427937 is 73972478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82428241 + 4999696 = 9079^2 + 2236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87427937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87427891 and 87427900.

It is not a weakly prime, because it can be changed into another prime (87427931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43713968 + 43713969.

It is an arithmetic number, because the mean of its divisors is an integer number (43713969).

Almost surely, 2^87427937 is an apocalyptic number.

It is an amenable number.

87427937 is a deficient number, since it is larger than the sum of its proper divisors (1).

87427937 is an equidigital number, since it uses as much as digits as its factorization.

87427937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 47.

The square root of 87427937 is about 9350.2907441427. The cubic root of 87427937 is about 443.8300911577.

The spelling of 87427937 in words is "eighty-seven million, four hundred twenty-seven thousand, nine hundred thirty-seven".