681450045 has 8 divisors (see below), whose sum is σ = 1090320096. Its totient is φ = 363440016.

The previous prime is 681450043. The next prime is 681450047. The reversal of 681450045 is 540054186.

681450045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (681450043) and next prime (681450047).

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

It is not a de Polignac number, because 681450045 - 2¹ = 681450043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 681449988 and 681450015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681450041) 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, 22714987 + ... + 22715016.

It is an arithmetic number, because the mean of its divisors is an integer number (136290012).

Almost surely, 2^681450045 is an apocalyptic number.

It is an amenable number.

681450045 is a deficient number, since it is larger than the sum of its proper divisors (408870051).

681450045 is a wasteful number, since it uses less digits than its factorization.

681450045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45430011.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 681450045 is about 26104.5981581790. The cubic root of 681450045 is about 879.9905495714.

The spelling of 681450045 in words is "six hundred eighty-one million, four hundred fifty thousand, forty-five".