407545645 has 16 divisors (see below), whose sum is σ = 527108400. Its totient is φ = 300708864.

The previous prime is 407545643. The next prime is 407545651. The reversal of 407545645 is 546545704.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6985449 + 400560196 = 2643^2 + 20014^2 .

It is a cyclic number.

It is not a de Polignac number, because 407545645 - 2¹ = 407545643 is a prime.

It is a super-3 number, since 3×407545645³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 407545598 and 407545607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407545643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125077 + ... + 128293.

It is an arithmetic number, because the mean of its divisors is an integer number (32944275).

Almost surely, 2^407545645 is an apocalyptic number.

It is an amenable number.

407545645 is a deficient number, since it is larger than the sum of its proper divisors (119562755).

407545645 is a wasteful number, since it uses less digits than its factorization.

407545645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184.

The product of its (nonzero) digits is 336000, while the sum is 40.

The square root of 407545645 is about 20187.7597816102. The cubic root of 407545645 is about 741.4105340077.

The spelling of 407545645 in words is "four hundred seven million, five hundred forty-five thousand, six hundred forty-five".