1720606426 has 16 divisors (see below), whose sum is σ = 3217757760. Its totient is φ = 670366080.

The previous prime is 1720606417. The next prime is 1720606487. The reversal of 1720606426 is 6246060271.

It is a junction number, because it is equal to n+sod(n) for n = 1720606391 and 1720606400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5586231 + ... + 5586538.

It is an arithmetic number, because the mean of its divisors is an integer number (201109860).

Almost surely, 2^1720606426 is an apocalyptic number.

1720606426 is a deficient number, since it is larger than the sum of its proper divisors (1497151334).

1720606426 is a wasteful number, since it uses less digits than its factorization.

1720606426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11172789.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1720606426 is about 41480.1931769851. The cubic root of 1720606426 is about 1198.2860777613.

Adding to 1720606426 its reverse (6246060271), we get a palindrome (7966666697).

The spelling of 1720606426 in words is "one billion, seven hundred twenty million, six hundred six thousand, four hundred twenty-six".