1264771606 has 16 divisors (see below), whose sum is σ = 2242945440. Its totient is φ = 523353600.

The previous prime is 1264771603. The next prime is 1264771609. The reversal of 1264771606 is 6061774621.

1264771606 = T₃₄₂₈ + T₃₄₂₉ + ... + T₃₆₃₀.

It is an interprime number because it is at equal distance from previous prime (1264771603) and next prime (1264771609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264771601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1557195 + ... + 1558006.

It is an arithmetic number, because the mean of its divisors is an integer number (140184090).

Almost surely, 2^1264771606 is an apocalyptic number.

1264771606 is a deficient number, since it is larger than the sum of its proper divisors (978173834).

1264771606 is a wasteful number, since it uses less digits than its factorization.

1264771606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115239.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 1264771606 is about 35563.6275708764. The cubic root of 1264771606 is about 1081.4440006693. Note that the first 3 decimals are identical.

The spelling of 1264771606 in words is "one billion, two hundred sixty-four million, seven hundred seventy-one thousand, six hundred six".