1064700640 has 48 divisors (see below), whose sum is σ = 2573868528. Its totient is φ = 415973376.

The previous prime is 1064700601. The next prime is 1064700643. The reversal of 1064700640 is 460074601.

It is a super-2 number, since 2×1064700640² = 2267174905632819200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1064700599 and 1064700608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064700643) 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, 70497 + ... + 84256.

It is an arithmetic number, because the mean of its divisors is an integer number (53622261).

Almost surely, 2^1064700640 is an apocalyptic number.

1064700640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1064700640 is an abundant number, since it is smaller than the sum of its proper divisors (1509167888).

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

1064700640 is a wasteful number, since it uses less digits than its factorization.

1064700640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154811 (or 154803 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1064700640 is about 32629.7508418314. The cubic root of 1064700640 is about 1021.1177801295.

The spelling of 1064700640 in words is "one billion, sixty-four million, seven hundred thousand, six hundred forty".