87876545 has 8 divisors (see below), whose sum is σ = 105570024. Its totient is φ = 70222464.

The previous prime is 87876541. The next prime is 87876557. The reversal of 87876545 is 54567878.

87876545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 790321 + 87086224 = 889^2 + 9332^2 .

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 87876545 - 2² = 87876541 is a prime.

It is a super-2 number, since 2×87876545² = 15444574322274050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87876493 and 87876502.

It is not an unprimeable number, because it can be changed into a prime (87876541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4694 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (13196253).

Almost surely, 2^87876545 is an apocalyptic number.

It is an amenable number.

87876545 is a deficient number, since it is larger than the sum of its proper divisors (17693479).

87876545 is a wasteful number, since it uses less digits than its factorization.

87876545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19699.

The product of its digits is 1881600, while the sum is 50.

The square root of 87876545 is about 9374.2490365895. The cubic root of 87876545 is about 444.5879196623.

The spelling of 87876545 in words is "eighty-seven million, eight hundred seventy-six thousand, five hundred forty-five".