1406606427644 has 24 divisors (see below), whose sum is σ = 2685413461248. Its totient is φ = 639348958640.

The previous prime is 1406606427643. The next prime is 1406606427649. The reversal of 1406606427644 is 4467246066041.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1406606427592 and 1406606427601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406606427643) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1249547 + ... + 2091549.

It is an arithmetic number, because the mean of its divisors is an integer number (111892227552).

Almost surely, 2^{1406606427644} is an apocalyptic number.

It is an amenable number.

1406606427644 is a deficient number, since it is larger than the sum of its proper divisors (1278807033604).

1406606427644 is a wasteful number, since it uses less digits than its factorization.

1406606427644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879985 (or 879983 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 50.

The spelling of 1406606427644 in words is "one trillion, four hundred six billion, six hundred six million, four hundred twenty-seven thousand, six hundred forty-four".