61701091 has 2 divisors, whose sum is σ = 61701092. Its totient is φ = 61701090.

The previous prime is 61701077. The next prime is 61701139. The reversal of 61701091 is 19010716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61701091 - 2²⁵ = 28146659 is a prime.

It is not a weakly prime, because it can be changed into another prime (61708091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30850545 + 30850546.

It is an arithmetic number, because the mean of its divisors is an integer number (30850546).

Almost surely, 2^61701091 is an apocalyptic number.

61701091 is a deficient number, since it is larger than the sum of its proper divisors (1).

61701091 is an equidigital number, since it uses as much as digits as its factorization.

61701091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 61701091 is about 7855.0042011446. The cubic root of 61701091 is about 395.1520879913.

The spelling of 61701091 in words is "sixty-one million, seven hundred one thousand, ninety-one".