87061377 has 16 divisors (see below), whose sum is σ = 125478080. Its totient is φ = 53376192.

The previous prime is 87061339. The next prime is 87061391. The reversal of 87061377 is 77316078.

It is not a de Polignac number, because 87061377 - 2¹⁰ = 87060353 is a prime.

It is a super-2 number, since 2×87061377² = 15159366730272258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (87061307) 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 15 ways as a sum of consecutive naturals, for example, 6774 + ... + 14832.

It is an arithmetic number, because the mean of its divisors is an integer number (7842380).

Almost surely, 2^87061377 is an apocalyptic number.

It is an amenable number.

87061377 is a deficient number, since it is larger than the sum of its proper divisors (38416703).

87061377 is a wasteful number, since it uses less digits than its factorization.

87061377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8352.

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 87061377 is about 9330.6686255595. The cubic root of 87061377 is about 443.2089385983.

The spelling of 87061377 in words is "eighty-seven million, sixty-one thousand, three hundred seventy-seven".