1061620745 has 4 divisors (see below), whose sum is σ = 1273944900. Its totient is φ = 849296592.

The previous prime is 1061620741. The next prime is 1061620753. The reversal of 1061620745 is 5470261601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 480617929 + 581002816 = 21923^2 + 24104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061620745 - 2² = 1061620741 is a prime.

It is a super-2 number, since 2×1061620745² = 2254077212428710050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061620741) 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, 106162070 + ... + 106162079.

It is an arithmetic number, because the mean of its divisors is an integer number (318486225).

Almost surely, 2^1061620745 is an apocalyptic number.

It is an amenable number.

1061620745 is a deficient number, since it is larger than the sum of its proper divisors (212324155).

1061620745 is an equidigital number, since it uses as much as digits as its factorization.

1061620745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212324154.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1061620745 is about 32582.5220785623. The cubic root of 1061620745 is about 1020.1322220623.

The spelling of 1061620745 in words is "one billion, sixty-one million, six hundred twenty thousand, seven hundred forty-five".