1247086497 has 8 divisors (see below), whose sum is σ = 1668199456. Its totient is φ = 828682272.

The previous prime is 1247086487. The next prime is 1247086541. The reversal of 1247086497 is 7946807421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1247086497 - 2⁶ = 1247086433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1247086457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676108 + ... + 677949.

It is an arithmetic number, because the mean of its divisors is an integer number (208524932).

Almost surely, 2^1247086497 is an apocalyptic number.

It is an amenable number.

1247086497 is a deficient number, since it is larger than the sum of its proper divisors (421112959).

1247086497 is a wasteful number, since it uses less digits than its factorization.

1247086497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354367.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 1247086497 is about 35314.1118676373. Note that the first 3 decimals coincide. The cubic root of 1247086497 is about 1076.3797670112.

The spelling of 1247086497 in words is "one billion, two hundred forty-seven million, eighty-six thousand, four hundred ninety-seven".