1064603640 has 32 divisors (see below), whose sum is σ = 3193811280. Its totient is φ = 283894272.

The previous prime is 1064603621. The next prime is 1064603647. The reversal of 1064603640 is 463064601.

It is a super-2 number, since 2×1064603640² = 2266761820602499200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1064603598 and 1064603607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064603647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4435729 + ... + 4435968.

Almost surely, 2^1064603640 is an apocalyptic number.

1064603640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1064603640 is an abundant number, since it is smaller than the sum of its proper divisors (2129207640).

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

1064603640 is a wasteful number, since it uses less digits than its factorization.

1064603640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8871711 (or 8871707 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1064603640 is about 32628.2644343827. The cubic root of 1064603640 is about 1021.0867693993.

The spelling of 1064603640 in words is "one billion, sixty-four million, six hundred three thousand, six hundred forty".