61727401 has 2 divisors, whose sum is σ = 61727402. Its totient is φ = 61727400.

The previous prime is 61727387. The next prime is 61727411. The reversal of 61727401 is 10472716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59907600 + 1819801 = 7740^2 + 1349^2 .

It is a cyclic number.

It is not a de Polignac number, because 61727401 - 2¹⁹ = 61203113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61727401.

It is not a weakly prime, because it can be changed into another prime (61727411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30863700 + 30863701.

It is an arithmetic number, because the mean of its divisors is an integer number (30863701).

Almost surely, 2^61727401 is an apocalyptic number.

It is an amenable number.

61727401 is a deficient number, since it is larger than the sum of its proper divisors (1).

61727401 is an equidigital number, since it uses as much as digits as its factorization.

61727401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 61727401 is about 7856.6787512282. The cubic root of 61727401 is about 395.2082456913.

It can be divided in two parts, 61727 and 401, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 61727401 in words is "sixty-one million, seven hundred twenty-seven thousand, four hundred one".