1406601506 has 4 divisors (see below), whose sum is σ = 2109902262. Its totient is φ = 703300752.

The previous prime is 1406601487. The next prime is 1406601523. The reversal of 1406601506 is 6051066041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6051066041 = 113 ⋅53549257.

It can be written as a sum of positive squares in only one way, i.e., 1126206481 + 280395025 = 33559^2 + 16745^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351650375 + ... + 351650378.

Almost surely, 2^1406601506 is an apocalyptic number.

1406601506 is a deficient number, since it is larger than the sum of its proper divisors (703300756).

1406601506 is an equidigital number, since it uses as much as digits as its factorization.

1406601506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703300755.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1406601506 is about 37504.6864538287. The cubic root of 1406601506 is about 1120.4445264571. Note that the first 3 decimals are identical.

Adding to 1406601506 its reverse (6051066041), we get a palindrome (7457667547).

The spelling of 1406601506 in words is "one billion, four hundred six million, six hundred one thousand, five hundred six".