1721672337 has 96 divisors (see below), whose sum is σ = 3052062720. Its totient is φ = 843321600.

The previous prime is 1721672321. The next prime is 1721672339. The reversal of 1721672337 is 7332761271.

It is not a de Polignac number, because 1721672337 - 2⁴ = 1721672321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1721672295 and 1721672304.

It is not an unprimeable number, because it can be changed into a prime (1721672339) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5201262 + ... + 5201592.

It is an arithmetic number, because the mean of its divisors is an integer number (31792320).

Almost surely, 2^1721672337 is an apocalyptic number.

It is an amenable number.

1721672337 is a deficient number, since it is larger than the sum of its proper divisors (1330390383).

1721672337 is a wasteful number, since it uses less digits than its factorization.

1721672337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 464 counting only the distinct ones).

The product of its digits is 74088, while the sum is 39.

The square root of 1721672337 is about 41493.0396211220. The cubic root of 1721672337 is about 1198.5334716701.

The spelling of 1721672337 in words is "one billion, seven hundred twenty-one million, six hundred seventy-two thousand, three hundred thirty-seven".