1404076561 has 6 divisors (see below), whose sum is σ = 1467778130. Its totient is φ = 1343029248.

The previous prime is 1404076519. The next prime is 1404076571. The reversal of 1404076561 is 1656704041.

It can be written as a sum of positive squares in only one way, i.e., 978438400 + 425638161 = 31280^2 + 20631^2 .

It is not a de Polignac number, because 1404076561 - 2⁷ = 1404076433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1404076511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1326576 + ... + 1327633.

Almost surely, 2^1404076561 is an apocalyptic number.

It is an amenable number.

1404076561 is a deficient number, since it is larger than the sum of its proper divisors (63701569).

1404076561 is an equidigital number, since it uses as much as digits as its factorization.

1404076561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654255 (or 2654232 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1404076561 is about 37471.0096074285. The cubic root of 1404076561 is about 1119.7737002925.

It can be divided in two parts, 14040 and 76561, that added together give a square (90601 = 301²).

The spelling of 1404076561 in words is "one billion, four hundred four million, seventy-six thousand, five hundred sixty-one".