2460721 has 2 divisors, whose sum is σ = 2460722. Its totient is φ = 2460720.

The previous prime is 2460719. The next prime is 2460743. The reversal of 2460721 is 1270642.

It is an a-pointer prime, because the next prime (2460743) can be obtained adding 2460721 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1852321 + 608400 = 1361^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2460721 - 2¹ = 2460719 is a prime.

Together with 2460719, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2460692 and 2460701.

It is not a weakly prime, because it can be changed into another prime (2460781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1230360 + 1230361.

It is an arithmetic number, because the mean of its divisors is an integer number (1230361).

2^2460721 is an apocalyptic number.

It is an amenable number.

2460721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2460721 is an equidigital number, since it uses as much as digits as its factorization.

2460721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2460721 is about 1568.6685437020. The cubic root of 2460721 is about 135.0063280070.

The spelling of 2460721 in words is "two million, four hundred sixty thousand, seven hundred twenty-one".