1606266626 has 4 divisors (see below), whose sum is σ = 2409399942. Its totient is φ = 803133312.

The previous prime is 1606266611. The next prime is 1606266647. The reversal of 1606266626 is 6266626061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6266626061 = 20981 ⋅298681.

It can be written as a sum of positive squares in only one way, i.e., 1430730625 + 175536001 = 37825^2 + 13249^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401566655 + ... + 401566658.

Almost surely, 2^1606266626 is an apocalyptic number.

1606266626 is a deficient number, since it is larger than the sum of its proper divisors (803133316).

1606266626 is an equidigital number, since it uses as much as digits as its factorization.

1606266626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803133315.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 1606266626 is about 40078.2562744439. The cubic root of 1606266626 is about 1171.1320832030.

The spelling of 1606266626 in words is "one billion, six hundred six million, two hundred sixty-six thousand, six hundred twenty-six".