61677901 has 2 divisors, whose sum is σ = 61677902. Its totient is φ = 61677900.

The previous prime is 61677883. The next prime is 61677923. The reversal of 61677901 is 10977616.

61677901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49420900 + 12257001 = 7030^2 + 3501^2 .

It is a cyclic number.

It is not a de Polignac number, because 61677901 - 2¹³ = 61669709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61677991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30838950 + 30838951.

It is an arithmetic number, because the mean of its divisors is an integer number (30838951).

Almost surely, 2^61677901 is an apocalyptic number.

It is an amenable number.

61677901 is a deficient number, since it is larger than the sum of its proper divisors (1).

61677901 is an equidigital number, since it uses as much as digits as its factorization.

61677901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 61677901 is about 7853.5279333558. The cubic root of 61677901 is about 395.1025765751.

The spelling of 61677901 in words is "sixty-one million, six hundred seventy-seven thousand, nine hundred one".