7640275 has 6 divisors (see below), whose sum is σ = 9473972. Its totient is φ = 6112200.

The previous prime is 7640263. The next prime is 7640279. The reversal of 7640275 is 5720467.

It is not a de Polignac number, because 7640275 - 2¹¹ = 7638227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7640279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152781 + ... + 152830.

Almost surely, 2^7640275 is an apocalyptic number.

7640275 is a deficient number, since it is larger than the sum of its proper divisors (1833697).

7640275 is a wasteful number, since it uses less digits than its factorization.

7640275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305621 (or 305616 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 7640275 is about 2764.1047375235. The cubic root of 7640275 is about 196.9562031698.

The spelling of 7640275 in words is "seven million, six hundred forty thousand, two hundred seventy-five".