1061661351 has 8 divisors (see below), whose sum is σ = 1423457280. Its totient is φ = 703819832.

The previous prime is 1061661323. The next prime is 1061661353. The reversal of 1061661351 is 1531661601.

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

It is a cyclic number.

It is not a de Polignac number, because 1061661351 - 2⁹ = 1061660839 is a prime.

It is a super-2 number, since 2×1061661351² = 2254249648414290402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061661353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987975 + ... + 989048.

It is an arithmetic number, because the mean of its divisors is an integer number (177932160).

Almost surely, 2^1061661351 is an apocalyptic number.

1061661351 is a deficient number, since it is larger than the sum of its proper divisors (361795929).

1061661351 is a wasteful number, since it uses less digits than its factorization.

1061661351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977205.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1061661351 is about 32583.1451980928. The cubic root of 1061661351 is about 1020.1452282640.

The spelling of 1061661351 in words is "one billion, sixty-one million, six hundred sixty-one thousand, three hundred fifty-one".