87709457 has 8 divisors (see below), whose sum is σ = 95783040. Its totient is φ = 79652560.

The previous prime is 87709441. The next prime is 87709471. The reversal of 87709457 is 75490778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87709457 - 2⁴ = 87709441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87709487) 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 in 7 ways as a sum of consecutive naturals, for example, 8519 + ... + 15747.

It is an arithmetic number, because the mean of its divisors is an integer number (11972880).

Almost surely, 2^87709457 is an apocalyptic number.

It is an amenable number.

87709457 is a deficient number, since it is larger than the sum of its proper divisors (8073583).

87709457 is a wasteful number, since it uses less digits than its factorization.

87709457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8343.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 87709457 is about 9365.3327223329. The cubic root of 87709457 is about 444.3059618391.

The spelling of 87709457 in words is "eighty-seven million, seven hundred nine thousand, four hundred fifty-seven".