1077555643 has 4 divisors (see below), whose sum is σ = 1084008240. Its totient is φ = 1071103048.

The previous prime is 1077555587. The next prime is 1077555653. The reversal of 1077555643 is 3465557701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3465557701 = 79 ⋅43867819.

It is a cyclic number.

It is not a de Polignac number, because 1077555643 - 2²¹ = 1075458491 is a prime.

It is a super-2 number, since 2×1077555643² = 2322252327522286898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1077555643.

It is not an unprimeable number, because it can be changed into a prime (1077555653) 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, 3226048 + ... + 3226381.

It is an arithmetic number, because the mean of its divisors is an integer number (271002060).

Almost surely, 2^1077555643 is an apocalyptic number.

1077555643 is a deficient number, since it is larger than the sum of its proper divisors (6452597).

1077555643 is an equidigital number, since it uses as much as digits as its factorization.

1077555643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6452596.

The product of its (nonzero) digits is 441000, while the sum is 43.

The square root of 1077555643 is about 32826.1426762268. The cubic root of 1077555643 is about 1025.2109478188.

The spelling of 1077555643 in words is "one billion, seventy-seven million, five hundred fifty-five thousand, six hundred forty-three".