1087720907 has 16 divisors (see below), whose sum is σ = 1339511040. Its totient is φ = 860114592.

The previous prime is 1087720883. The next prime is 1087720943. The reversal of 1087720907 is 7090277801.

It is a cyclic number.

It is not a de Polignac number, because 1087720907 - 2⁸ = 1087720651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1087720957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285944 + ... + 289722.

It is an arithmetic number, because the mean of its divisors is an integer number (83719440).

Almost surely, 2^1087720907 is an apocalyptic number.

1087720907 is a deficient number, since it is larger than the sum of its proper divisors (251790133).

1087720907 is a wasteful number, since it uses less digits than its factorization.

1087720907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6962.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 1087720907 is about 32980.6141088974. The cubic root of 1087720907 is about 1028.4246842947.

The spelling of 1087720907 in words is "one billion, eighty-seven million, seven hundred twenty thousand, nine hundred seven".