1077621745 has 8 divisors (see below), whose sum is σ = 1293633000. Its totient is φ = 861772800.

The previous prime is 1077621731. The next prime is 1077621751. The reversal of 1077621745 is 5471267701.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 242642929 + 834978816 = 15577^2 + 28896^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1077621745 - 2¹³ = 1077613553 is a prime.

It is a super-2 number, since 2×1077621745² = 2322537250593690050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1077621698 and 1077621707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25456 + ... + 52945.

It is an arithmetic number, because the mean of its divisors is an integer number (161704125).

Almost surely, 2^1077621745 is an apocalyptic number.

It is an amenable number.

1077621745 is a deficient number, since it is larger than the sum of its proper divisors (216011255).

1077621745 is an equidigital number, since it uses as much as digits as its factorization.

1077621745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81155.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 1077621745 is about 32827.1495107327. The cubic root of 1077621745 is about 1025.2319110389.

The spelling of 1077621745 in words is "one billion, seventy-seven million, six hundred twenty-one thousand, seven hundred forty-five".