61814761 has 2 divisors, whose sum is σ = 61814762. Its totient is φ = 61814760.

The previous prime is 61814759. The next prime is 61814789. The reversal of 61814761 is 16741816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59907600 + 1907161 = 7740^2 + 1381^2 .

It is a cyclic number.

It is not a de Polignac number, because 61814761 - 2¹ = 61814759 is a prime.

Together with 61814759, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (61814741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30907380 + 30907381.

It is an arithmetic number, because the mean of its divisors is an integer number (30907381).

Almost surely, 2^61814761 is an apocalyptic number.

It is an amenable number.

61814761 is a deficient number, since it is larger than the sum of its proper divisors (1).

61814761 is an equidigital number, since it uses as much as digits as its factorization.

61814761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 61814761 is about 7862.2363866778. The cubic root of 61814761 is about 395.3945979280.

The spelling of 61814761 in words is "sixty-one million, eight hundred fourteen thousand, seven hundred sixty-one".