1640424760 has 64 divisors (see below), whose sum is σ = 4071876480. Its totient is φ = 590914560.

The previous prime is 1640424739. The next prime is 1640424769. The reversal of 1640424760 is 674240461.

1640424760 is a modest number, since divided by 424760 gives 1640 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640424769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17152 + ... + 59791.

It is an arithmetic number, because the mean of its divisors is an integer number (63623070).

Almost surely, 2^1640424760 is an apocalyptic number.

1640424760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1640424760 is an abundant number, since it is smaller than the sum of its proper divisors (2431451720).

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

1640424760 is a wasteful number, since it uses less digits than its factorization.

1640424760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77008 (or 77004 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 1640424760 is about 40502.1574733989. The cubic root of 1640424760 is about 1179.3755098358.

The spelling of 1640424760 in words is "one billion, six hundred forty million, four hundred twenty-four thousand, seven hundred sixty".