87276061 has 2 divisors, whose sum is σ = 87276062. Its totient is φ = 87276060.

The previous prime is 87276047. The next prime is 87276089. The reversal of 87276061 is 16067278.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81180100 + 6095961 = 9010^2 + 2469^2 .

It is a cyclic number.

It is not a de Polignac number, because 87276061 - 2⁵ = 87276029 is a prime.

It is a super-2 number, since 2×87276061² = 15234221647351442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87276061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87276031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43638030 + 43638031.

It is an arithmetic number, because the mean of its divisors is an integer number (43638031).

Almost surely, 2^87276061 is an apocalyptic number.

It is an amenable number.

87276061 is a deficient number, since it is larger than the sum of its proper divisors (1).

87276061 is an equidigital number, since it uses as much as digits as its factorization.

87276061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 87276061 is about 9342.1657553268. The cubic root of 87276061 is about 443.5729414364.

The spelling of 87276061 in words is "eighty-seven million, two hundred seventy-six thousand, sixty-one".