1061660601 has 20 divisors (see below), whose sum is σ = 1624623924. Its totient is φ = 690508800.

The previous prime is 1061660599. The next prime is 1061660629. The reversal of 1061660601 is 1060661601.

It can be written as a sum of positive squares in 2 ways, for example, as 23532201 + 1038128400 = 4851^2 + 32220^2 .

It is not a de Polignac number, because 1061660601 - 2¹ = 1061660599 is a prime.

It is a super-2 number, since 2×1061660601² = 2254246463431362402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1061660641) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 156520 + ... + 163161.

Almost surely, 2^1061660601 is an apocalyptic number.

It is an amenable number.

1061660601 is a deficient number, since it is larger than the sum of its proper divisors (562963323).

1061660601 is an equidigital number, since it uses as much as digits as its factorization.

1061660601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319734 (or 319725 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1061660601 is about 32583.1336890729. The cubic root of 1061660601 is about 1020.1449880402.

It can be divided in two parts, 10616 and 60601, that added together give a palindrome (71217).

The spelling of 1061660601 in words is "one billion, sixty-one million, six hundred sixty thousand, six hundred one".