61467977 has 2 divisors, whose sum is σ = 61467978. Its totient is φ = 61467976.

The previous prime is 61467961. The next prime is 61467997. The reversal of 61467977 is 77976416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37222201 + 24245776 = 6101^2 + 4924^2 .

It is a cyclic number.

It is not a de Polignac number, because 61467977 - 2⁴ = 61467961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61467997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30733988 + 30733989.

It is an arithmetic number, because the mean of its divisors is an integer number (30733989).

Almost surely, 2^61467977 is an apocalyptic number.

It is an amenable number.

61467977 is a deficient number, since it is larger than the sum of its proper divisors (1).

61467977 is an equidigital number, since it uses as much as digits as its factorization.

61467977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 47.

The square root of 61467977 is about 7840.1515929222. The cubic root of 61467977 is about 394.6538162202.

The spelling of 61467977 in words is "sixty-one million, four hundred sixty-seven thousand, nine hundred seventy-seven".