1672061565 has 32 divisors (see below), whose sum is σ = 2725975296. Its totient is φ = 875033600.

The previous prime is 1672061513. The next prime is 1672061597. The reversal of 1672061565 is 5651602761.

It is not a de Polignac number, because 1672061565 - 2¹¹ = 1672059517 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166312 + ... + 176078.

It is an arithmetic number, because the mean of its divisors is an integer number (85186728).

Almost surely, 2^1672061565 is an apocalyptic number.

1672061565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1672061565 is a deficient number, since it is larger than the sum of its proper divisors (1053913731).

1672061565 is a wasteful number, since it uses less digits than its factorization.

1672061565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9989.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 1672061565 is about 40890.8494042371. The cubic root of 1672061565 is about 1186.9089955159.

The spelling of 1672061565 in words is "one billion, six hundred seventy-two million, sixty-one thousand, five hundred sixty-five".