1077996987 has 12 divisors (see below), whose sum is σ = 1573160680. Its totient is φ = 711255168.

The previous prime is 1077996973. The next prime is 1077996989. The reversal of 1077996987 is 7896997701.

It is a de Polignac number, because none of the positive numbers 2^k-1077996987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1077996989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 616537 + ... + 618282.

Almost surely, 2^1077996987 is an apocalyptic number.

1077996987 is a deficient number, since it is larger than the sum of its proper divisors (495163693).

1077996987 is a wasteful number, since it uses less digits than its factorization.

1077996987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234922 (or 1234919 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 63.

The square root of 1077996987 is about 32832.8644348921. The cubic root of 1077996987 is about 1025.3508969538.

The spelling of 1077996987 in words is "one billion, seventy-seven million, nine hundred ninety-six thousand, nine hundred eighty-seven".