1427623565 has 8 divisors (see below), whose sum is σ = 1741233048. Its totient is φ = 1123375680.

The previous prime is 1427623559. The next prime is 1427623597. The reversal of 1427623565 is 5653267241.

It can be written as a sum of positive squares in 4 ways, for example, as 83521321 + 1344102244 = 9139^2 + 36662^2 .

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

It is not a de Polignac number, because 1427623565 - 2¹² = 1427619469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2340062 + ... + 2340671.

It is an arithmetic number, because the mean of its divisors is an integer number (217654131).

Almost surely, 2^1427623565 is an apocalyptic number.

It is an amenable number.

1427623565 is a deficient number, since it is larger than the sum of its proper divisors (313609483).

1427623565 is an equidigital number, since it uses as much as digits as its factorization.

1427623565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680799.

The product of its digits is 302400, while the sum is 41.

The square root of 1427623565 is about 37783.9061638682. The cubic root of 1427623565 is about 1125.9987351535.

The spelling of 1427623565 in words is "one billion, four hundred twenty-seven million, six hundred twenty-three thousand, five hundred sixty-five".