147220697 has 16 divisors (see below), whose sum is σ = 171052560. Its totient is φ = 125478912.

The previous prime is 147220693. The next prime is 147220727. The reversal of 147220697 is 796022741.

It can be written as a sum of positive squares in 8 ways, for example, as 23921881 + 123298816 = 4891^2 + 11104^2 .

It is not a de Polignac number, because 147220697 - 2² = 147220693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147220697.

It is not an unprimeable number, because it can be changed into a prime (147220693) 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 15 ways as a sum of consecutive naturals, for example, 5429 + ... + 17997.

It is an arithmetic number, because the mean of its divisors is an integer number (10690785).

Almost surely, 2^147220697 is an apocalyptic number.

147220697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

147220697 is a deficient number, since it is larger than the sum of its proper divisors (23831863).

147220697 is a wasteful number, since it uses less digits than its factorization.

147220697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12652.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 147220697 is about 12133.4536303560. The cubic root of 147220697 is about 528.0271940864.

The spelling of 147220697 in words is "one hundred forty-seven million, two hundred twenty thousand, six hundred ninety-seven".