70661222 has 4 divisors (see below), whose sum is σ = 105991836. Its totient is φ = 35330610.

The previous prime is 70661219. The next prime is 70661233. The reversal of 70661222 is 22216607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22216607 = 7 ⋅3173801.

It is a junction number, because it is equal to n+sod(n) for n = 70661191 and 70661200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17665304 + ... + 17665307.

It is an arithmetic number, because the mean of its divisors is an integer number (26497959).

Almost surely, 2^70661222 is an apocalyptic number.

70661222 is a deficient number, since it is larger than the sum of its proper divisors (35330614).

70661222 is a wasteful number, since it uses less digits than its factorization.

70661222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35330613.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 70661222 is about 8406.0229597593. The cubic root of 70661222 is about 413.4221246696.

Adding to 70661222 its reverse (22216607), we get a palindrome (92877829).

The spelling of 70661222 in words is "seventy million, six hundred sixty-one thousand, two hundred twenty-two".