1061060661 has 32 divisors (see below), whose sum is σ = 1692662400. Its totient is φ = 654462720.

The previous prime is 1061060641. The next prime is 1061060687. The reversal of 1061060661 is 1660601601.

It is not a de Polignac number, because 1061060661 - 2¹¹ = 1061058613 is a prime.

It is a super-2 number, since 2×1061060661² = 2251699452643513842, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061060641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7491 + ... + 46671.

It is an arithmetic number, because the mean of its divisors is an integer number (52895700).

Almost surely, 2^1061060661 is an apocalyptic number.

It is an amenable number.

1061060661 is a deficient number, since it is larger than the sum of its proper divisors (631601739).

1061060661 is a wasteful number, since it uses less digits than its factorization.

1061060661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39266 (or 39260 counting only the distinct ones).

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

The square root of 1061060661 is about 32573.9260912774. The cubic root of 1061060661 is about 1019.9527919328.

The spelling of 1061060661 in words is "one billion, sixty-one million, sixty thousand, six hundred sixty-one".