69077081 has 2 divisors, whose sum is σ = 69077082. Its totient is φ = 69077080.

The previous prime is 69077077. The next prime is 69077111. The reversal of 69077081 is 18077096.

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., 68740681 + 336400 = 8291^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 69077081 - 2² = 69077077 is a prime.

It is a super-2 number, since 2×69077081² = 9543286238961122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (69077011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34538540 + 34538541.

It is an arithmetic number, because the mean of its divisors is an integer number (34538541).

Almost surely, 2^69077081 is an apocalyptic number.

It is an amenable number.

69077081 is a deficient number, since it is larger than the sum of its proper divisors (1).

69077081 is an equidigital number, since it uses as much as digits as its factorization.

69077081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 69077081 is about 8311.2622988328. The cubic root of 69077081 is about 410.3092669557.

The spelling of 69077081 in words is "sixty-nine million, seventy-seven thousand, eighty-one".