1356665427 has 24 divisors (see below), whose sum is σ = 2130876384. Its totient is φ = 826758144.

The previous prime is 1356665423. The next prime is 1356665459. The reversal of 1356665427 is 7245666531.

It is not a de Polignac number, because 1356665427 - 2² = 1356665423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1356665423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44238 + ... + 68339.

It is an arithmetic number, because the mean of its divisors is an integer number (88786516).

Almost surely, 2^1356665427 is an apocalyptic number.

1356665427 is a deficient number, since it is larger than the sum of its proper divisors (774210957).

1356665427 is a wasteful number, since it uses less digits than its factorization.

1356665427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112699 (or 112696 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 1356665427 is about 36832.9394292663. The cubic root of 1356665427 is about 1107.0254007191.

The spelling of 1356665427 in words is "one billion, three hundred fifty-six million, six hundred sixty-five thousand, four hundred twenty-seven".