1406722651 has 2 divisors, whose sum is σ = 1406722652. Its totient is φ = 1406722650.

The previous prime is 1406722631. The next prime is 1406722693. The reversal of 1406722651 is 1562276041.

It is a weak prime.

It is an emirp because it is prime and its reverse (1562276041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406722651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1406722621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703361325 + 703361326.

It is an arithmetic number, because the mean of its divisors is an integer number (703361326).

Almost surely, 2^1406722651 is an apocalyptic number.

1406722651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406722651 is an equidigital number, since it uses as much as digits as its factorization.

1406722651 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1406722651 is about 37506.3014838840. The cubic root of 1406722651 is about 1120.4766920124.

Adding to 1406722651 its reverse (1562276041), we get a palindrome (2968998692).

The spelling of 1406722651 in words is "one billion, four hundred six million, seven hundred twenty-two thousand, six hundred fifty-one".