61805371 has 2 divisors, whose sum is σ = 61805372. Its totient is φ = 61805370.

The previous prime is 61805363. The next prime is 61805389. The reversal of 61805371 is 17350816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61805371 - 2³ = 61805363 is a prime.

It is not a weakly prime, because it can be changed into another prime (61805311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30902685 + 30902686.

It is an arithmetic number, because the mean of its divisors is an integer number (30902686).

Almost surely, 2^61805371 is an apocalyptic number.

61805371 is a deficient number, since it is larger than the sum of its proper divisors (1).

61805371 is an equidigital number, since it uses as much as digits as its factorization.

61805371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 61805371 is about 7861.6392056619. The cubic root of 61805371 is about 395.3745760474.

The spelling of 61805371 in words is "sixty-one million, eight hundred five thousand, three hundred seventy-one".