987061793 has 4 divisors (see below), whose sum is σ = 1018902528. Its totient is φ = 955221060.

The previous prime is 987061781. The next prime is 987061807. The reversal of 987061793 is 397160789.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987061793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987061703) 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, 15920321 + ... + 15920382.

It is an arithmetic number, because the mean of its divisors is an integer number (254725632).

Almost surely, 2^987061793 is an apocalyptic number.

It is an amenable number.

987061793 is a deficient number, since it is larger than the sum of its proper divisors (31840735).

987061793 is a wasteful number, since it uses less digits than its factorization.

987061793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31840734.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 987061793 is about 31417.5395758484. The cubic root of 987061793 is about 995.6685297876.

The spelling of 987061793 in words is "nine hundred eighty-seven million, sixty-one thousand, seven hundred ninety-three".