1670222720 has 64 divisors (see below), whose sum is σ = 4024512000. Its totient is φ = 662796288.

The previous prime is 1670222711. The next prime is 1670222737. The reversal of 1670222720 is 272220761.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71006 + ... + 91554.

It is an arithmetic number, because the mean of its divisors is an integer number (62883000).

Almost surely, 2^1670222720 is an apocalyptic number.

1670222720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670222720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2012256000).

1670222720 is an abundant number, since it is smaller than the sum of its proper divisors (2354289280).

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

1670222720 is a wasteful number, since it uses less digits than its factorization.

1670222720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20695 (or 20683 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 1670222720 is about 40868.3584206657. The cubic root of 1670222720 is about 1186.4737359760.

The spelling of 1670222720 in words is "one billion, six hundred seventy million, two hundred twenty-two thousand, seven hundred twenty".