87660542 has 8 divisors (see below), whose sum is σ = 134698032. Its totient is φ = 42761200.

The previous prime is 87660527. The next prime is 87660563. The reversal of 87660542 is 24506678.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 87660496 and 87660505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534434 + ... + 534597.

It is an arithmetic number, because the mean of its divisors is an integer number (16837254).

Almost surely, 2^87660542 is an apocalyptic number.

87660542 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

87660542 is a deficient number, since it is larger than the sum of its proper divisors (47037490).

87660542 is a wasteful number, since it uses less digits than its factorization.

87660542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069074.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 87660542 is about 9362.7208652186. The cubic root of 87660542 is about 444.2233509543.

The spelling of 87660542 in words is "eighty-seven million, six hundred sixty thousand, five hundred forty-two".