655257247707 has 8 divisors (see below), whose sum is σ = 886716275776. Its totient is φ = 430318192392.

The previous prime is 655257247693. The next prime is 655257247721. The reversal of 655257247707 is 707742752556.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (655257247693) and next prime (655257247721).

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

It is not a de Polignac number, because 655257247707 - 2¹¹ = 655257245659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655257247727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629992953 + ... + 1629993354.

It is an arithmetic number, because the mean of its divisors is an integer number (110839534472).

Almost surely, 2^655257247707 is an apocalyptic number.

655257247707 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

655257247707 is a deficient number, since it is larger than the sum of its proper divisors (231459028069).

655257247707 is a wasteful number, since it uses less digits than its factorization.

655257247707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259986377.

The product of its (nonzero) digits is 28812000, while the sum is 57.

The spelling of 655257247707 in words is "six hundred fifty-five billion, two hundred fifty-seven million, two hundred forty-seven thousand, seven hundred seven".