1679497220 has 12 divisors (see below), whose sum is σ = 3526944204. Its totient is φ = 671798880.

The previous prime is 1679497219. The next prime is 1679497243. The reversal of 1679497220 is 227949761.

It can be written as a sum of positive squares in 2 ways, for example, as 917847616 + 761649604 = 30296^2 + 27598^2 .

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, 41987411 + ... + 41987450.

It is an arithmetic number, because the mean of its divisors is an integer number (293912017).

Almost surely, 2^1679497220 is an apocalyptic number.

1679497220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1679497220 is an abundant number, since it is smaller than the sum of its proper divisors (1847446984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1679497220 is a wasteful number, since it uses less digits than its factorization.

1679497220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83974870 (or 83974868 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 1679497220 is about 40981.6693169031. The cubic root of 1679497220 is about 1188.6657880425.

The spelling of 1679497220 in words is "one billion, six hundred seventy-nine million, four hundred ninety-seven thousand, two hundred twenty".