165586747 has 2 divisors, whose sum is σ = 165586748. Its totient is φ = 165586746.

The previous prime is 165586727. The next prime is 165586763. The reversal of 165586747 is 747685561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165586747 is a prime.

It is a super-4 number, since 4×165586747⁴ (a number of 34 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165586747.

It is not a weakly prime, because it can be changed into another prime (165586727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82793373 + 82793374.

It is an arithmetic number, because the mean of its divisors is an integer number (82793374).

Almost surely, 2^165586747 is an apocalyptic number.

165586747 is a deficient number, since it is larger than the sum of its proper divisors (1).

165586747 is an equidigital number, since it uses as much as digits as its factorization.

165586747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 49.

The square root of 165586747 is about 12868.0514064873. The cubic root of 165586747 is about 549.1300262798.

The spelling of 165586747 in words is "one hundred sixty-five million, five hundred eighty-six thousand, seven hundred forty-seven".