5672781 has 24 divisors (see below), whose sum is σ = 8939840. Its totient is φ = 3554496.

The previous prime is 5672767. The next prime is 5672809. The reversal of 5672781 is 1872765.

It is not a de Polignac number, because 5672781 - 2¹⁴ = 5656397 is a prime.

It is a super-2 number, since 2×5672781² = 64360888547922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5672731) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7440 + ... + 8166.

Almost surely, 2^5672781 is an apocalyptic number.

5672781 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5672781 is a deficient number, since it is larger than the sum of its proper divisors (3267059).

5672781 is a wasteful number, since it uses less digits than its factorization.

5672781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770 (or 747 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 5672781 is about 2381.7600634825. The cubic root of 5672781 is about 178.3468073398.

The spelling of 5672781 in words is "five million, six hundred seventy-two thousand, seven hundred eighty-one".