87613705 has 8 divisors (see below), whose sum is σ = 105264000. Its totient is φ = 70005936.

The previous prime is 87613703. The next prime is 87613723. The reversal of 87613705 is 50731678.

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 87613705 - 2¹ = 87613703 is a prime.

It is a super-2 number, since 2×87613705² = 15352322607654050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87613703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5905 + ... + 14494.

It is an arithmetic number, because the mean of its divisors is an integer number (13158000).

Almost surely, 2^87613705 is an apocalyptic number.

It is an amenable number.

87613705 is a deficient number, since it is larger than the sum of its proper divisors (17650295).

87613705 is a wasteful number, since it uses less digits than its factorization.

87613705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21263.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 87613705 is about 9360.2192816194. The cubic root of 87613705 is about 444.1442207273.

The spelling of 87613705 in words is "eighty-seven million, six hundred thirteen thousand, seven hundred five".