4691640 has 32 divisors (see below), whose sum is σ = 14075280. Its totient is φ = 1251072.

The previous prime is 4691627. The next prime is 4691699. The reversal of 4691640 is 461964.

It is a super-2 number, since 2×4691640² = 44022971779200, 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 = 4691598 and 4691607.

It is a congruent number.

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, 19429 + ... + 19668.

Almost surely, 2^4691640 is an apocalyptic number.

4691640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4691640 is an abundant number, since it is smaller than the sum of its proper divisors (9383640).

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

4691640 is a wasteful number, since it uses less digits than its factorization.

4691640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39111 (or 39107 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 4691640 is about 2166.0193904949. The cubic root of 4691640 is about 167.4074932876.

The spelling of 4691640 in words is "four million, six hundred ninety-one thousand, six hundred forty".