1067534640 has 100 divisors (see below), whose sum is σ = 3707728464. Its totient is φ = 284674176.

The previous prime is 1067534623. The next prime is 1067534647. The reversal of 1067534640 is 464357601.

It is a happy number.

1067534640 is a `hidden beast` number, since 1 + 0 + 6 + 7 + 5 + 3 + 4 + 640 = 666.

It is a super-2 number, since 2×1067534640² = 2279260415199859200, 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 = 1067534595 and 1067534604.

It is not an unprimeable number, because it can be changed into a prime (1067534647) 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, 75892 + ... + 88851.

Almost surely, 2^1067534640 is an apocalyptic number.

1067534640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1067534640 is an abundant number, since it is smaller than the sum of its proper divisors (2640193824).

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

1067534640 is a wasteful number, since it uses less digits than its factorization.

1067534640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164768 (or 164753 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1067534640 is about 32673.1486086052. The cubic root of 1067534640 is about 1022.0229747836.

The spelling of 1067534640 in words is "one billion, sixty-seven million, five hundred thirty-four thousand, six hundred forty".