7642715 has 4 divisors (see below), whose sum is σ = 9171264. Its totient is φ = 6114168.

The previous prime is 7642711. The next prime is 7642729. The reversal of 7642715 is 5172467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5172467 = 67 ⋅77201.

It is a cyclic number.

It is not a de Polignac number, because 7642715 - 2² = 7642711 is a prime.

It is a super-2 number, since 2×7642715² = 116822185142450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7642711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764267 + ... + 764276.

It is an arithmetic number, because the mean of its divisors is an integer number (2292816).

Almost surely, 2^7642715 is an apocalyptic number.

7642715 is a deficient number, since it is larger than the sum of its proper divisors (1528549).

7642715 is a wasteful number, since it uses less digits than its factorization.

7642715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528548.

The product of its digits is 11760, while the sum is 32.

The square root of 7642715 is about 2764.5460748557. The cubic root of 7642715 is about 196.9771675978.

The spelling of 7642715 in words is "seven million, six hundred forty-two thousand, seven hundred fifteen".