981270087 has 16 divisors (see below), whose sum is σ = 1496604672. Its totient is φ = 560224800.

The previous prime is 981270079. The next prime is 981270109. The reversal of 981270087 is 780072189.

It is not a de Polignac number, because 981270087 - 2³ = 981270079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981270047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3873 + ... + 44469.

It is an arithmetic number, because the mean of its divisors is an integer number (93537792).

Almost surely, 2^981270087 is an apocalyptic number.

981270087 is a deficient number, since it is larger than the sum of its proper divisors (515334585).

981270087 is a wasteful number, since it uses less digits than its factorization.

981270087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41758.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 981270087 is about 31325.2308371383. The cubic root of 981270087 is about 993.7173060879.

The spelling of 981270087 in words is "nine hundred eighty-one million, two hundred seventy thousand, eighty-seven".