87462691 has 2 divisors, whose sum is σ = 87462692. Its totient is φ = 87462690.

The previous prime is 87462653. The next prime is 87462701. The reversal of 87462691 is 19626478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87462691 - 2¹⁹ = 86938403 is a prime.

It is a super-2 number, since 2×87462691² = 15299444633922962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87462601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43731345 + 43731346.

It is an arithmetic number, because the mean of its divisors is an integer number (43731346).

Almost surely, 2^87462691 is an apocalyptic number.

87462691 is a deficient number, since it is larger than the sum of its proper divisors (1).

87462691 is an equidigital number, since it uses as much as digits as its factorization.

87462691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 87462691 is about 9352.1490043733. The cubic root of 87462691 is about 443.8888932145. Note that the first 4 decimals are identical.

The spelling of 87462691 in words is "eighty-seven million, four hundred sixty-two thousand, six hundred ninety-one".