1406665053 has 6 divisors (see below), whose sum is σ = 2031849534. Its totient is φ = 937776696.

The previous prime is 1406664991. The next prime is 1406665087. The reversal of 1406665053 is 3505666041.

It can be written as a sum of positive squares in only one way, i.e., 814132089 + 592532964 = 28533^2 + 24342^2 .

It is not a de Polignac number, because 1406665053 - 2⁶ = 1406664989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1406664999 and 1406665017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406665453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78148050 + ... + 78148067.

It is an arithmetic number, because the mean of its divisors is an integer number (338641589).

Almost surely, 2^1406665053 is an apocalyptic number.

It is an amenable number.

1406665053 is a deficient number, since it is larger than the sum of its proper divisors (625184481).

1406665053 is a wasteful number, since it uses less digits than its factorization.

1406665053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156296123 (or 156296120 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1406665053 is about 37505.5336317189. The cubic root of 1406665053 is about 1120.4613992331.

The spelling of 1406665053 in words is "one billion, four hundred six million, six hundred sixty-five thousand, fifty-three".