1072661026 has 4 divisors (see below), whose sum is σ = 1608991542. Its totient is φ = 536330512.

The previous prime is 1072661021. The next prime is 1072661059. The reversal of 1072661026 is 6201662701.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1072497001 + 164025 = 32749^2 + 405^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1072661021) 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 as a sum of consecutive naturals, namely, 268165255 + ... + 268165258.

Almost surely, 2^1072661026 is an apocalyptic number.

1072661026 is a deficient number, since it is larger than the sum of its proper divisors (536330516).

1072661026 is an equidigital number, since it uses as much as digits as its factorization.

1072661026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536330515.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1072661026 is about 32751.5041791976. The cubic root of 1072661026 is about 1023.6563082261.

The spelling of 1072661026 in words is "one billion, seventy-two million, six hundred sixty-one thousand, twenty-six".