1471261666 has 16 divisors (see below), whose sum is σ = 2523689856. Its totient is φ = 630158976.

The previous prime is 1471261661. The next prime is 1471261679. The reversal of 1471261666 is 6661621741.

It is a super-2 number, since 2×1471261666² = 4329221779682191112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1471261661) 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, 7206 + ... + 54721.

It is an arithmetic number, because the mean of its divisors is an integer number (157730616).

Almost surely, 2^1471261666 is an apocalyptic number.

1471261666 is a deficient number, since it is larger than the sum of its proper divisors (1052428190).

1471261666 is a wasteful number, since it uses less digits than its factorization.

1471261666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63633.

The product of its digits is 72576, while the sum is 40.

The square root of 1471261666 is about 38357.0288995381. The cubic root of 1471261666 is about 1137.3565677699.

The spelling of 1471261666 in words is "one billion, four hundred seventy-one million, two hundred sixty-one thousand, six hundred sixty-six".