351966722 has 4 divisors (see below), whose sum is σ = 527950086. Its totient is φ = 175983360.

The previous prime is 351966689. The next prime is 351966733. The reversal of 351966722 is 227669153.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227669153 = 19 ⋅11982587.

It can be written as a sum of positive squares in only one way, i.e., 309443281 + 42523441 = 17591^2 + 6521^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 351966722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87991679 + ... + 87991682.

Almost surely, 2^351966722 is an apocalyptic number.

351966722 is a deficient number, since it is larger than the sum of its proper divisors (175983364).

351966722 is a wasteful number, since it uses less digits than its factorization.

351966722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175983363.

The product of its digits is 136080, while the sum is 41.

The square root of 351966722 is about 18760.7761566519. The cubic root of 351966722 is about 706.0474158087.

The spelling of 351966722 in words is "three hundred fifty-one million, nine hundred sixty-six thousand, seven hundred twenty-two".