424698640 has 40 divisors (see below), whose sum is σ = 1039397760. Its totient is φ = 160937856.

The previous prime is 424698629. The next prime is 424698661. The reversal of 424698640 is 46896424.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138184 + ... + 141223.

It is an arithmetic number, because the mean of its divisors is an integer number (25984944).

Almost surely, 2^424698640 is an apocalyptic number.

424698640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424698640 is an abundant number, since it is smaller than the sum of its proper divisors (614699120).

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

424698640 is a wasteful number, since it uses less digits than its factorization.

424698640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279439 (or 279433 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 424698640 is about 20608.2177783524. The cubic root of 424698640 is about 751.6695488659.

The spelling of 424698640 in words is "four hundred twenty-four million, six hundred ninety-eight thousand, six hundred forty".