612650761 has 2 divisors, whose sum is σ = 612650762. Its totient is φ = 612650760.

The previous prime is 612650729. The next prime is 612650771. The reversal of 612650761 is 167056216.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512750736 + 99900025 = 22644^2 + 9995^2 .

It is a cyclic number.

It is not a de Polignac number, because 612650761 - 2⁵ = 612650729 is a prime.

It is not a weakly prime, because it can be changed into another prime (612650771) 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, 306325380 + 306325381.

It is an arithmetic number, because the mean of its divisors is an integer number (306325381).

Almost surely, 2^612650761 is an apocalyptic number.

It is an amenable number.

612650761 is a deficient number, since it is larger than the sum of its proper divisors (1).

612650761 is an equidigital number, since it uses as much as digits as its factorization.

612650761 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 34.

The square root of 612650761 is about 24751.7829862820. The cubic root of 612650761 is about 849.3192986213.

The spelling of 612650761 in words is "six hundred twelve million, six hundred fifty thousand, seven hundred sixty-one".