245667729 has 32 divisors (see below), whose sum is σ = 350824320. Its totient is φ = 152635392.

The previous prime is 245667683. The next prime is 245667743. The reversal of 245667729 is 927766542.

245667729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 245667729 - 2⁷ = 245667601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245667769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362539 + ... + 363215.

It is an arithmetic number, because the mean of its divisors is an integer number (10963260).

Almost surely, 2^245667729 is an apocalyptic number.

245667729 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

245667729 is a deficient number, since it is larger than the sum of its proper divisors (105156591).

245667729 is a wasteful number, since it uses less digits than its factorization.

245667729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849.

The product of its digits is 1270080, while the sum is 48.

The square root of 245667729 is about 15673.7911495592. The cubic root of 245667729 is about 626.3004211179.

The spelling of 245667729 in words is "two hundred forty-five million, six hundred sixty-seven thousand, seven hundred twenty-nine".