161206970 has 8 divisors (see below), whose sum is σ = 290172564. Its totient is φ = 64482784.

The previous prime is 161206951. The next prime is 161206993. The reversal of 161206970 is 79602161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 161010721 + 196249 = 12689^2 + 443^2 .

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

It is a super-3 number, since 3×161206970³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8060339 + ... + 8060358.

Almost surely, 2^161206970 is an apocalyptic number.

161206970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161206970 is a deficient number, since it is larger than the sum of its proper divisors (128965594).

161206970 is a wasteful number, since it uses less digits than its factorization.

161206970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16120704.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 161206970 is about 12696.7306815574. The cubic root of 161206970 is about 544.2451970098.

The spelling of 161206970 in words is "one hundred sixty-one million, two hundred six thousand, nine hundred seventy".