69720081 has 8 divisors (see below), whose sum is σ = 93200640. Its totient is φ = 46359792.

The previous prime is 69720067. The next prime is 69720103. The reversal of 69720081 is 18002796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69720081 - 2⁷ = 69719953 is a prime.

It is a super-2 number, since 2×69720081² = 9721779389293122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (69725081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28705 + ... + 31038.

It is an arithmetic number, because the mean of its divisors is an integer number (11650080).

Almost surely, 2^69720081 is an apocalyptic number.

It is an amenable number.

69720081 is a deficient number, since it is larger than the sum of its proper divisors (23480559).

69720081 is a wasteful number, since it uses less digits than its factorization.

69720081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60135.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 69720081 is about 8349.8551484442. The cubic root of 69720081 is about 411.5784503579.

The spelling of 69720081 in words is "sixty-nine million, seven hundred twenty thousand, eighty-one".