7123897 has 4 divisors (see below), whose sum is σ = 7771536. Its totient is φ = 6476260.

The previous prime is 7123891. The next prime is 7123903. The reversal of 7123897 is 7983217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (7123891) and next prime (7123903).

It is a cyclic number.

It is not a de Polignac number, because 7123897 - 2¹⁵ = 7091129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7123891) 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, 323803 + ... + 323824.

It is an arithmetic number, because the mean of its divisors is an integer number (1942884).

Almost surely, 2^7123897 is an apocalyptic number.

It is an amenable number.

7123897 is a deficient number, since it is larger than the sum of its proper divisors (647639).

7123897 is a wasteful number, since it uses less digits than its factorization.

7123897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647638.

The product of its digits is 21168, while the sum is 37.

The square root of 7123897 is about 2669.0629441810. The cubic root of 7123897 is about 192.4151264684.

It can be divided in two parts, 7 and 123897, that added together give a square (123904 = 352²).

The spelling of 7123897 in words is "seven million, one hundred twenty-three thousand, eight hundred ninety-seven".