7720495 has 8 divisors (see below), whose sum is σ = 9322416. Its totient is φ = 6137856.

The previous prime is 7720487. The next prime is 7720507. The reversal of 7720495 is 5940277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 11-Lehmer number, since φ(7720495) divides (7720495-1)¹¹.

It is a cyclic number.

It is not a de Polignac number, because 7720495 - 2³ = 7720487 is a prime.

It is a Duffinian number.

7720495 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7720495.

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, 3922 + ... + 5551.

It is an arithmetic number, because the mean of its divisors is an integer number (1165302).

Almost surely, 2^7720495 is an apocalyptic number.

7720495 is a deficient number, since it is larger than the sum of its proper divisors (1601921).

7720495 is a wasteful number, since it uses less digits than its factorization.

7720495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9641.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 7720495 is about 2778.5778736613. The cubic root of 7720495 is about 197.6431265040.

The spelling of 7720495 in words is "seven million, seven hundred twenty thousand, four hundred ninety-five".