361662643 has 2 divisors, whose sum is σ = 361662644. Its totient is φ = 361662642.

The previous prime is 361662629. The next prime is 361662661. The reversal of 361662643 is 346266163.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361662643 is a prime.

It is not a weakly prime, because it can be changed into another prime (361662673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180831321 + 180831322.

It is an arithmetic number, because the mean of its divisors is an integer number (180831322).

Almost surely, 2^361662643 is an apocalyptic number.

361662643 is a deficient number, since it is larger than the sum of its proper divisors (1).

361662643 is an equidigital number, since it uses as much as digits as its factorization.

361662643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 37.

The square root of 361662643 is about 19017.4299788378. The cubic root of 361662643 is about 712.4721354856.

It can be divided in two parts, 36166 and 2643, that added together give a square (38809 = 197²).

The spelling of 361662643 in words is "three hundred sixty-one million, six hundred sixty-two thousand, six hundred forty-three".