162640005 has 32 divisors (see below), whose sum is σ = 284663808. Its totient is φ = 78638400.

The previous prime is 162639991. The next prime is 162640007. The reversal of 162640005 is 500046261.

It is not a de Polignac number, because 162640005 - 2¹³ = 162631813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162640007) 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, 69972 + ... + 72258.

It is an arithmetic number, because the mean of its divisors is an integer number (8895744).

Almost surely, 2^162640005 is an apocalyptic number.

162640005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162640005 is a deficient number, since it is larger than the sum of its proper divisors (122023803).

162640005 is a wasteful number, since it uses less digits than its factorization.

162640005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 162640005 is about 12753.0390495756. The cubic root of 162640005 is about 545.8531149653.

Adding to 162640005 its reverse (500046261), we get a palindrome (662686266).

The spelling of 162640005 in words is "one hundred sixty-two million, six hundred forty thousand, five".