981216576 has 42 divisors (see below), whose sum is σ = 2812481802. Its totient is φ = 327072000.

The previous prime is 981216571. The next prime is 981216581. The reversal of 981216576 is 675612189.

It is an interprime number because it is at equal distance from previous prime (981216571) and next prime (981216581).

It can be written as a sum of positive squares in only one way, i.e., 929030400 + 52186176 = 30480^2 + 7224^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981216571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 851175 + ... + 852326.

Almost surely, 2^981216576 is an apocalyptic number.

981216576 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

981216576 is an abundant number, since it is smaller than the sum of its proper divisors (1831265226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

981216576 is a wasteful number, since it uses less digits than its factorization.

981216576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703519 (or 1703506 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 981216576 is about 31324.3767056904. The cubic root of 981216576 is about 993.6992425007.

The spelling of 981216576 in words is "nine hundred eighty-one million, two hundred sixteen thousand, five hundred seventy-six".