1077643 has 4 divisors (see below), whose sum is σ = 1231600. Its totient is φ = 923688.

The previous prime is 1077641. The next prime is 1077673. The reversal of 1077643 is 3467701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1077643 - 2¹ = 1077641 is a prime.

It is a super-2 number, since 2×1077643² = 2322628870898, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1077641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76968 + ... + 76981.

It is an arithmetic number, because the mean of its divisors is an integer number (307900).

2^1077643 is an apocalyptic number.

1077643 is a deficient number, since it is larger than the sum of its proper divisors (153957).

1077643 is an equidigital number, since it uses as much as digits as its factorization.

1077643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153956.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 1077643 is about 1038.0958529924. The cubic root of 1077643 is about 102.5238651549.

It can be divided in two parts, 107 and 7643, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 1077643 in words is "one million, seventy-seven thousand, six hundred forty-three".