1320040617 has 32 divisors (see below), whose sum is σ = 2072294400. Its totient is φ = 731747520.

The previous prime is 1320040583. The next prime is 1320040651. The reversal of 1320040617 is 7160400231.

It is an interprime number because it is at equal distance from previous prime (1320040583) and next prime (1320040651).

It is not a de Polignac number, because 1320040617 - 2¹⁵ = 1320007849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320040697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129642 + ... + 139452.

It is an arithmetic number, because the mean of its divisors is an integer number (64759200).

Almost surely, 2^1320040617 is an apocalyptic number.

It is an amenable number.

1320040617 is a deficient number, since it is larger than the sum of its proper divisors (752253783).

1320040617 is a wasteful number, since it uses less digits than its factorization.

1320040617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10013.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1320040617 is about 36332.3632179356. The cubic root of 1320040617 is about 1096.9725617038.

Adding to 1320040617 its reverse (7160400231), we get a palindrome (8480440848).

The spelling of 1320040617 in words is "one billion, three hundred twenty million, forty thousand, six hundred seventeen".