84787275 has 12 divisors (see below), whose sum is σ = 140181752. Its totient is φ = 45219840.

The previous prime is 84787273. The next prime is 84787309. The reversal of 84787275 is 57278748.

It is a happy number.

It is not a de Polignac number, because 84787275 - 2¹ = 84787273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84787273) 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 11 ways as a sum of consecutive naturals, for example, 565174 + ... + 565323.

Almost surely, 2^84787275 is an apocalyptic number.

84787275 is a deficient number, since it is larger than the sum of its proper divisors (55394477).

84787275 is a wasteful number, since it uses less digits than its factorization.

84787275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130510 (or 1130505 counting only the distinct ones).

The product of its digits is 878080, while the sum is 48.

The square root of 84787275 is about 9208.0005973067. Note that the first 3 decimals coincide. The cubic root of 84787275 is about 439.3158703791.

It can be divided in two parts, 8478 and 7275, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 84787275 in words is "eighty-four million, seven hundred eighty-seven thousand, two hundred seventy-five".