87662293 has 2 divisors, whose sum is σ = 87662294. Its totient is φ = 87662292.

The previous prime is 87662291. The next prime is 87662299. The reversal of 87662293 is 39226678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47238129 + 40424164 = 6873^2 + 6358^2 .

It is a cyclic number.

It is not a de Polignac number, because 87662293 - 2¹ = 87662291 is a prime.

It is a super-2 number, since 2×87662293² = 15369355228035698, which contains 22 as substring.

Together with 87662291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87662291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43831146 + 43831147.

It is an arithmetic number, because the mean of its divisors is an integer number (43831147).

Almost surely, 2^87662293 is an apocalyptic number.

It is an amenable number.

87662293 is a deficient number, since it is larger than the sum of its proper divisors (1).

87662293 is an equidigital number, since it uses as much as digits as its factorization.

87662293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 87662293 is about 9362.8143738942. The cubic root of 87662293 is about 444.2263086891.

The spelling of 87662293 in words is "eighty-seven million, six hundred sixty-two thousand, two hundred ninety-three".