61373317 has 2 divisors, whose sum is σ = 61373318. Its totient is φ = 61373316.

The previous prime is 61373303. The next prime is 61373339. The reversal of 61373317 is 71337316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61058596 + 314721 = 7814^2 + 561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61373317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61353317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30686658 + 30686659.

It is an arithmetic number, because the mean of its divisors is an integer number (30686659).

Almost surely, 2^61373317 is an apocalyptic number.

It is an amenable number.

61373317 is a deficient number, since it is larger than the sum of its proper divisors (1).

61373317 is an equidigital number, since it uses as much as digits as its factorization.

61373317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 31.

The square root of 61373317 is about 7834.1123938836. The cubic root of 61373317 is about 394.4511246431.

The spelling of 61373317 in words is "sixty-one million, three hundred seventy-three thousand, three hundred seventeen".