1670722340 has 24 divisors (see below), whose sum is σ = 4009733952. Its totient is φ = 572819040.

The previous prime is 1670722337. The next prime is 1670722343. The reversal of 1670722340 is 432270761.

It is an interprime number because it is at equal distance from previous prime (1670722337) and next prime (1670722343).

It is a junction number, because it is equal to n+sod(n) for n = 1670722297 and 1670722306.

It is not an unprimeable number, because it can be changed into a prime (1670722343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5966726 + ... + 5967005.

It is an arithmetic number, because the mean of its divisors is an integer number (167072248).

Almost surely, 2^1670722340 is an apocalyptic number.

1670722340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670722340 is an abundant number, since it is smaller than the sum of its proper divisors (2339011612).

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

1670722340 is a wasteful number, since it uses less digits than its factorization.

1670722340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11933747 (or 11933745 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 1670722340 is about 40874.4705164483. The cubic root of 1670722340 is about 1186.5920289644.

The spelling of 1670722340 in words is "one billion, six hundred seventy million, seven hundred twenty-two thousand, three hundred forty".