61763389 has 2 divisors, whose sum is σ = 61763390. Its totient is φ = 61763388.

The previous prime is 61763369. The next prime is 61763393. The reversal of 61763389 is 98336716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35497764 + 26265625 = 5958^2 + 5125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61763389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61763369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30881694 + 30881695.

It is an arithmetic number, because the mean of its divisors is an integer number (30881695).

Almost surely, 2^61763389 is an apocalyptic number.

It is an amenable number.

61763389 is a deficient number, since it is larger than the sum of its proper divisors (1).

61763389 is an equidigital number, since it uses as much as digits as its factorization.

61763389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 61763389 is about 7858.9686982453. The cubic root of 61763389 is about 395.2850348804.

The spelling of 61763389 in words is "sixty-one million, seven hundred sixty-three thousand, three hundred eighty-nine".