61407653 has 2 divisors, whose sum is σ = 61407654. Its totient is φ = 61407652.

The previous prime is 61407649. The next prime is 61407659. The reversal of 61407653 is 35670416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45670564 + 15737089 = 6758^2 + 3967^2 .

It is a cyclic number.

It is not a de Polignac number, because 61407653 - 2² = 61407649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61407659) 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 as a sum of consecutive naturals, namely, 30703826 + 30703827.

It is an arithmetic number, because the mean of its divisors is an integer number (30703827).

Almost surely, 2^61407653 is an apocalyptic number.

It is an amenable number.

61407653 is a deficient number, since it is larger than the sum of its proper divisors (1).

61407653 is an equidigital number, since it uses as much as digits as its factorization.

61407653 is an odious number, because the sum of its binary digits is odd.

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

The square root of 61407653 is about 7836.3035290882. The cubic root of 61407653 is about 394.5246709849.

The spelling of 61407653 in words is "sixty-one million, four hundred seven thousand, six hundred fifty-three".