1058660640 has 72 divisors (see below), whose sum is σ = 3612684348. Its totient is φ = 282309120.

The previous prime is 1058660621. The next prime is 1058660651. The reversal of 1058660640 is 460668501.

1058660640 is a `hidden beast` number, since 1 + 0 + 5 + 8 + 6 + 6 + 0 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 957778704 + 100881936 = 30948^2 + 10044^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1058660640² = 2241524701370419200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1058660595 and 1058660604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366151 + ... + 369030.

Almost surely, 2^1058660640 is an apocalyptic number.

1058660640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1058660640 is an abundant number, since it is smaller than the sum of its proper divisors (2554023708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1058660640 is a wasteful number, since it uses less digits than its factorization.

1058660640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735202 (or 735191 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1058660640 is about 32537.0656329055. The cubic root of 1058660640 is about 1019.1831984560.

The spelling of 1058660640 in words is "one billion, fifty-eight million, six hundred sixty thousand, six hundred forty".