1672562661 has 16 divisors (see below), whose sum is σ = 2780364288. Its totient is φ = 868863600.

The previous prime is 1672562611. The next prime is 1672562669. The reversal of 1672562661 is 1662652761.

It is not a de Polignac number, because 1672562661 - 2⁶ = 1672562597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672562669) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3620035 + ... + 3620496.

It is an arithmetic number, because the mean of its divisors is an integer number (173772768).

Almost surely, 2^1672562661 is an apocalyptic number.

1672562661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1672562661 is a deficient number, since it is larger than the sum of its proper divisors (1107801627).

1672562661 is a wasteful number, since it uses less digits than its factorization.

1672562661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7240552.

The product of its digits is 181440, while the sum is 42.

The square root of 1672562661 is about 40896.9761840652. The cubic root of 1672562661 is about 1187.0275509485.

The spelling of 1672562661 in words is "one billion, six hundred seventy-two million, five hundred sixty-two thousand, six hundred sixty-one".