987097816 has 8 divisors (see below), whose sum is σ = 1850808420. Its totient is φ = 493548904.

The previous prime is 987097759. The next prime is 987097817. The reversal of 987097816 is 618790789.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987097817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61693606 + ... + 61693621.

Almost surely, 2^987097816 is an apocalyptic number.

It is an amenable number.

987097816 is a deficient number, since it is larger than the sum of its proper divisors (863710604).

987097816 is a wasteful number, since it uses less digits than its factorization.

987097816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123387233 (or 123387229 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 55.

The square root of 987097816 is about 31418.1128650338. The cubic root of 987097816 is about 995.6806420084.

The spelling of 987097816 in words is "nine hundred eighty-seven million, ninety-seven thousand, eight hundred sixteen".