6461537 has 2 divisors, whose sum is σ = 6461538. Its totient is φ = 6461536.

The previous prime is 6461531. The next prime is 6461549. The reversal of 6461537 is 7351646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4946176 + 1515361 = 2224^2 + 1231^2 .

It is a cyclic number.

It is not a de Polignac number, because 6461537 - 2¹² = 6457441 is a prime.

It is not a weakly prime, because it can be changed into another prime (6461531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230768 + 3230769.

It is an arithmetic number, because the mean of its divisors is an integer number (3230769).

Almost surely, 2^6461537 is an apocalyptic number.

It is an amenable number.

6461537 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461537 is an equidigital number, since it uses as much as digits as its factorization.

6461537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 6461537 is about 2541.9553497259. The cubic root of 6461537 is about 186.2567176233.

The spelling of 6461537 in words is "six million, four hundred sixty-one thousand, five hundred thirty-seven".