87709405 has 8 divisors (see below), whose sum is σ = 120287232. Its totient is φ = 60143568.

The previous prime is 87709387. The next prime is 87709423. The reversal of 87709405 is 50490778.

It is an interprime number because it is at equal distance from previous prime (87709387) and next prime (87709423).

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 87709405 - 2⁹ = 87708893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252957 + ... + 1253026.

It is an arithmetic number, because the mean of its divisors is an integer number (15035904).

Almost surely, 2^87709405 is an apocalyptic number.

It is an amenable number.

87709405 is a deficient number, since it is larger than the sum of its proper divisors (32577827).

87709405 is a wasteful number, since it uses less digits than its factorization.

87709405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505995.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 87709405 is about 9365.3299461364. The cubic root of 87709405 is about 444.3058740343.

The spelling of 87709405 in words is "eighty-seven million, seven hundred nine thousand, four hundred five".