61079969 has 2 divisors, whose sum is σ = 61079970. Its totient is φ = 61079968.

The previous prime is 61079939. The next prime is 61079989. The reversal of 61079969 is 96997016.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33779344 + 27300625 = 5812^2 + 5225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61079969 is a prime.

It is a super-2 number, since 2×61079969² = 7461525226081922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61079939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30539984 + 30539985.

It is an arithmetic number, because the mean of its divisors is an integer number (30539985).

Almost surely, 2^61079969 is an apocalyptic number.

It is an amenable number.

61079969 is a deficient number, since it is larger than the sum of its proper divisors (1).

61079969 is an equidigital number, since it uses as much as digits as its factorization.

61079969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 61079969 is about 7815.3674897602. The cubic root of 61079969 is about 393.8216638185.

The spelling of 61079969 in words is "sixty-one million, seventy-nine thousand, nine hundred sixty-nine".