70619221 has 4 divisors (see below), whose sum is σ = 70670272. Its totient is φ = 70568172.

The previous prime is 70619203. The next prime is 70619233. The reversal of 70619221 is 12291607.

It is a happy number.

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 70619221 - 2¹⁷ = 70488149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70619221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70619291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23391 + ... + 26236.

It is an arithmetic number, because the mean of its divisors is an integer number (17667568).

Almost surely, 2^70619221 is an apocalyptic number.

It is an amenable number.

70619221 is a deficient number, since it is larger than the sum of its proper divisors (51051).

70619221 is a wasteful number, since it uses less digits than its factorization.

70619221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51050.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 70619221 is about 8403.5243201885. The cubic root of 70619221 is about 413.3401957902.

The spelling of 70619221 in words is "seventy million, six hundred nineteen thousand, two hundred twenty-one".