162977069 has 4 divisors (see below), whose sum is σ = 163047900. Its totient is φ = 162906240.

The previous prime is 162977063. The next prime is 162977077. The reversal of 162977069 is 960779261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960779261 = 13 ⋅73906097.

It can be written as a sum of positive squares in 2 ways, for example, as 3258025 + 159719044 = 1805^2 + 12638^2 .

It is a cyclic number.

It is not a de Polignac number, because 162977069 - 2²⁴ = 146199853 is a prime.

It is a super-2 number, since 2×162977069² = 53123050039661522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162977063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31844 + ... + 36605.

It is an arithmetic number, because the mean of its divisors is an integer number (40761975).

Almost surely, 2^162977069 is an apocalyptic number.

It is an amenable number.

162977069 is a deficient number, since it is larger than the sum of its proper divisors (70831).

162977069 is an equidigital number, since it uses as much as digits as its factorization.

162977069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70830.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 162977069 is about 12766.2472559480. The cubic root of 162977069 is about 546.2299400042.

The spelling of 162977069 in words is "one hundred sixty-two million, nine hundred seventy-seven thousand, sixty-nine".