7640000 has 70 divisors (see below), whose sum is σ = 19043904. Its totient is φ = 3040000.

The previous prime is 7639999. The next prime is 7640023. The reversal of 7640000 is 467.

7640000 = 178² + 179² + ... + 305².

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39905 + ... + 40095.

Almost surely, 2^7640000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9521952).

7640000 is an abundant number, since it is smaller than the sum of its proper divisors (11403904).

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

7640000 is an equidigital number, since it uses as much as digits as its factorization.

7640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 7640000 is about 2764.0549922171. The cubic root of 7640000 is about 196.9538400958.

Adding to 7640000 its reverse (467), we get a palindrome (7640467).

The spelling of 7640000 in words is "seven million, six hundred forty thousand".