61947601 has 2 divisors, whose sum is σ = 61947602. Its totient is φ = 61947600.

The previous prime is 61947593. The next prime is 61947607. The reversal of 61947601 is 10674916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55577025 + 6370576 = 7455^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 61947601 - 2³ = 61947593 is a prime.

It is equal to p_3670693 and since 61947601 and 3670693 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61947607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30973800 + 30973801.

It is an arithmetic number, because the mean of its divisors is an integer number (30973801).

Almost surely, 2^61947601 is an apocalyptic number.

It is an amenable number.

61947601 is a deficient number, since it is larger than the sum of its proper divisors (1).

61947601 is an equidigital number, since it uses as much as digits as its factorization.

61947601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 61947601 is about 7870.6798308659. The cubic root of 61947601 is about 395.6776297774.

The spelling of 61947601 in words is "sixty-one million, nine hundred forty-seven thousand, six hundred one".