7640036440 has 16 divisors (see below), whose sum is σ = 17190082080. Its totient is φ = 3056014560.

The previous prime is 7640036423. The next prime is 7640036461. The reversal of 7640036440 is 446300467.

It is a junction number, because it is equal to n+sod(n) for n = 7640036396 and 7640036405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95500416 + ... + 95500495.

It is an arithmetic number, because the mean of its divisors is an integer number (1074380130).

Almost surely, 2^7640036440 is an apocalyptic number.

It is an amenable number.

7640036440 is an abundant number, since it is smaller than the sum of its proper divisors (9550045640).

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

7640036440 is a wasteful number, since it uses less digits than its factorization.

7640036440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191000922 (or 191000918 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 7640036440 is about 87407.3019833011. The cubic root of 7640036440 is about 1969.5415322784.

The spelling of 7640036440 in words is "seven billion, six hundred forty million, thirty-six thousand, four hundred forty".