982561487 has 4 divisors (see below), whose sum is σ = 982805640. Its totient is φ = 982317336.

The previous prime is 982561483. The next prime is 982561493. The reversal of 982561487 is 784165289.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784165289 = 23 ⋅34094143.

It is a cyclic number.

It is not a de Polignac number, because 982561487 - 2² = 982561483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (982561483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115937 + ... + 124122.

It is an arithmetic number, because the mean of its divisors is an integer number (245701410).

Almost surely, 2^982561487 is an apocalyptic number.

982561487 is a deficient number, since it is larger than the sum of its proper divisors (244153).

982561487 is a wasteful number, since it uses less digits than its factorization.

982561487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244152.

The product of its digits is 967680, while the sum is 50.

The square root of 982561487 is about 31345.8368368114. The cubic root of 982561487 is about 994.1530420458.

The spelling of 982561487 in words is "nine hundred eighty-two million, five hundred sixty-one thousand, four hundred eighty-seven".