87174469 has 2 divisors, whose sum is σ = 87174470. Its totient is φ = 87174468.

The previous prime is 87174457. The next prime is 87174473. The reversal of 87174469 is 96447178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77176225 + 9998244 = 8785^2 + 3162^2 .

It is a cyclic number.

It is not a de Polignac number, because 87174469 - 2¹⁵ = 87141701 is a prime.

It is a super-2 number, since 2×87174469² = 15198776090863922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87174499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43587234 + 43587235.

It is an arithmetic number, because the mean of its divisors is an integer number (43587235).

Almost surely, 2^87174469 is an apocalyptic number.

It is an amenable number.

87174469 is a deficient number, since it is larger than the sum of its proper divisors (1).

87174469 is an equidigital number, since it uses as much as digits as its factorization.

87174469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 87174469 is about 9336.7268890120. The cubic root of 87174469 is about 443.4007637963.

The spelling of 87174469 in words is "eighty-seven million, one hundred seventy-four thousand, four hundred sixty-nine".