61167797 has 2 divisors, whose sum is σ = 61167798. Its totient is φ = 61167796.

The previous prime is 61167793. The next prime is 61167809. The reversal of 61167797 is 79776116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60824401 + 343396 = 7799^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 61167797 - 2² = 61167793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61167793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30583898 + 30583899.

It is an arithmetic number, because the mean of its divisors is an integer number (30583899).

Almost surely, 2^61167797 is an apocalyptic number.

It is an amenable number.

61167797 is a deficient number, since it is larger than the sum of its proper divisors (1).

61167797 is an equidigital number, since it uses as much as digits as its factorization.

61167797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 44.

The square root of 61167797 is about 7820.9844009562. The cubic root of 61167797 is about 394.0103345310.

The spelling of 61167797 in words is "sixty-one million, one hundred sixty-seven thousand, seven hundred ninety-seven".