87375649 has 2 divisors, whose sum is σ = 87375650. Its totient is φ = 87375648.

The previous prime is 87375593. The next prime is 87375667. The reversal of 87375649 is 94657378.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79977249 + 7398400 = 8943^2 + 2720^2 .

It is a cyclic number.

It is not a de Polignac number, because 87375649 - 2²¹ = 85278497 is a prime.

It is not a weakly prime, because it can be changed into another prime (87375749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43687824 + 43687825.

It is an arithmetic number, because the mean of its divisors is an integer number (43687825).

Almost surely, 2^87375649 is an apocalyptic number.

It is an amenable number.

87375649 is a deficient number, since it is larger than the sum of its proper divisors (1).

87375649 is an equidigital number, since it uses as much as digits as its factorization.

87375649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The square root of 87375649 is about 9347.4942631702. The cubic root of 87375649 is about 443.7415930696.

The spelling of 87375649 in words is "eighty-seven million, three hundred seventy-five thousand, six hundred forty-nine".