34725781 has 8 divisors (see below), whose sum is σ = 36958680. Its totient is φ = 32514048.

The previous prime is 34725773. The next prime is 34725829. The reversal of 34725781 is 18752743.

It can be written as a sum of positive squares in 4 ways, for example, as 10666756 + 24059025 = 3266^2 + 4905^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 34725781 - 2³ = 34725773 is a prime.

It is a super-2 number, since 2×34725781² = 2411759732119922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 34725781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34725751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1836 + ... + 8533.

It is an arithmetic number, because the mean of its divisors is an integer number (4619835).

Almost surely, 2^34725781 is an apocalyptic number.

It is an amenable number.

34725781 is a deficient number, since it is larger than the sum of its proper divisors (2232899).

34725781 is a wasteful number, since it uses less digits than its factorization.

34725781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10583.

The product of its digits is 47040, while the sum is 37.

The square root of 34725781 is about 5892.8584744587. The cubic root of 34725781 is about 326.2501154318.

The spelling of 34725781 in words is "thirty-four million, seven hundred twenty-five thousand, seven hundred eighty-one".