6974920657 has 4 divisors (see below), whose sum is σ = 6975094000. Its totient is φ = 6974747316.

The previous prime is 6974920597. The next prime is 6974920699. The reversal of 6974920657 is 7560294796.

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 a cyclic number.

It is not a de Polignac number, because 6974920657 - 2³¹ = 4827437009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6974920598 and 6974920607.

It is not an unprimeable number, because it can be changed into a prime (6974920457) 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, 8578 + ... + 118420.

It is an arithmetic number, because the mean of its divisors is an integer number (1743773500).

Almost surely, 2^6974920657 is an apocalyptic number.

It is an amenable number.

6974920657 is a deficient number, since it is larger than the sum of its proper divisors (173343).

6974920657 is a wasteful number, since it uses less digits than its factorization.

6974920657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173342.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The square root of 6974920657 is about 83515.9904269835. The cubic root of 6974920657 is about 1910.6439224864.

The spelling of 6974920657 in words is "six billion, nine hundred seventy-four million, nine hundred twenty thousand, six hundred fifty-seven".