1373670065 has 4 divisors (see below), whose sum is σ = 1648404084. Its totient is φ = 1098936048.

The previous prime is 1373670043. The next prime is 1373670073. The reversal of 1373670065 is 5600763731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 496799521 + 876870544 = 22289^2 + 29612^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373670065 - 2¹⁴ = 1373653681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 137367002 + ... + 137367011.

It is an arithmetic number, because the mean of its divisors is an integer number (412101021).

Almost surely, 2^1373670065 is an apocalyptic number.

It is an amenable number.

1373670065 is a deficient number, since it is larger than the sum of its proper divisors (274734019).

1373670065 is an equidigital number, since it uses as much as digits as its factorization.

1373670065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274734018.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 1373670065 is about 37063.0552572235. The cubic root of 1373670065 is about 1111.6314146086.

The spelling of 1373670065 in words is "one billion, three hundred seventy-three million, six hundred seventy thousand, sixty-five".