70220890 has 64 divisors (see below), whose sum is σ = 138101760. Its totient is φ = 25643520.

The previous prime is 70220879. The next prime is 70220923. The reversal of 70220890 is 9802207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656217 + ... + 656323.

It is an arithmetic number, because the mean of its divisors is an integer number (2157840).

Almost surely, 2^70220890 is an apocalyptic number.

70220890 is a deficient number, since it is larger than the sum of its proper divisors (67880870).

70220890 is a wasteful number, since it uses less digits than its factorization.

70220890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 70220890 is about 8379.7905701754. The cubic root of 70220890 is about 412.5615751362.

The spelling of 70220890 in words is "seventy million, two hundred twenty thousand, eight hundred ninety".