34720081 has 4 divisors (see below), whose sum is σ = 37876464. Its totient is φ = 31563700.

The previous prime is 34720073. The next prime is 34720117. The reversal of 34720081 is 18002743.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 34720081 - 2³ = 34720073 is a prime.

It is a super-2 number, since 2×34720081² = 2410968049293122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34720061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578175 + ... + 1578196.

It is an arithmetic number, because the mean of its divisors is an integer number (9469116).

Almost surely, 2^34720081 is an apocalyptic number.

It is an amenable number.

34720081 is a deficient number, since it is larger than the sum of its proper divisors (3156383).

34720081 is a wasteful number, since it uses less digits than its factorization.

34720081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156382.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 34720081 is about 5892.3748183563. The cubic root of 34720081 is about 326.2322638783.

The spelling of 34720081 in words is "thirty-four million, seven hundred twenty thousand, eighty-one".