1320764767 has 12 divisors (see below), whose sum is σ = 1537025976. Its totient is φ = 1131622800.

The previous prime is 1320764759. The next prime is 1320764773. The reversal of 1320764767 is 7674670231.

It is not a de Polignac number, because 1320764767 - 2³ = 1320764759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320764747) 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, 177708 + ... + 184990.

It is an arithmetic number, because the mean of its divisors is an integer number (128085498).

Almost surely, 2^1320764767 is an apocalyptic number.

1320764767 is a deficient number, since it is larger than the sum of its proper divisors (216261209).

1320764767 is an equidigital number, since it uses as much as digits as its factorization.

1320764767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10998 (or 10991 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 1320764767 is about 36342.3274846287. The cubic root of 1320764767 is about 1097.1731180239.

The spelling of 1320764767 in words is "one billion, three hundred twenty million, seven hundred sixty-four thousand, seven hundred sixty-seven".