706378621955 has 4 divisors (see below), whose sum is σ = 847654346352. Its totient is φ = 565102897560.

The previous prime is 706378621939. The next prime is 706378622011. The reversal of 706378621955 is 559126873607.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 706378621955 - 2⁴ = 706378621939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 706378621894 and 706378621903.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70637862191 + ... + 70637862200.

It is an arithmetic number, because the mean of its divisors is an integer number (211913586588).

Almost surely, 2^706378621955 is an apocalyptic number.

706378621955 is a deficient number, since it is larger than the sum of its proper divisors (141275724397).

706378621955 is a wasteful number, since it uses less digits than its factorization.

706378621955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141275724396.

The product of its (nonzero) digits is 19051200, while the sum is 59.

The spelling of 706378621955 in words is "seven hundred six billion, three hundred seventy-eight million, six hundred twenty-one thousand, nine hundred fifty-five".