61764929 has 2 divisors, whose sum is σ = 61764930. Its totient is φ = 61764928.

The previous prime is 61764907. The next prime is 61764947. The reversal of 61764929 is 92946716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58874929 + 2890000 = 7673^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 61764929 - 2⁸ = 61764673 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61764929.

It is not a weakly prime, because it can be changed into another prime (61764529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30882464 + 30882465.

It is an arithmetic number, because the mean of its divisors is an integer number (30882465).

Almost surely, 2^61764929 is an apocalyptic number.

It is an amenable number.

61764929 is a deficient number, since it is larger than the sum of its proper divisors (1).

61764929 is an equidigital number, since it uses as much as digits as its factorization.

61764929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 61764929 is about 7859.0666748667. The cubic root of 61764929 is about 395.2883201810.

The spelling of 61764929 in words is "sixty-one million, seven hundred sixty-four thousand, nine hundred twenty-nine".