320662545 has 32 divisors (see below), whose sum is σ = 589897728. Its totient is φ = 145702848.

The previous prime is 320662523. The next prime is 320662547. The reversal of 320662545 is 545266023.

It is not a de Polignac number, because 320662545 - 2⁵ = 320662513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320662547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8392 + ... + 26678.

It is an arithmetic number, because the mean of its divisors is an integer number (18434304).

Almost surely, 2^320662545 is an apocalyptic number.

320662545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

320662545 is a deficient number, since it is larger than the sum of its proper divisors (269235183).

320662545 is a wasteful number, since it uses less digits than its factorization.

320662545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18469.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 320662545 is about 17907.0529401127. The cubic root of 320662545 is about 684.4621099268.

The spelling of 320662545 in words is "three hundred twenty million, six hundred sixty-two thousand, five hundred forty-five".