70221776 has 10 divisors (see below), whose sum is σ = 136054722. Its totient is φ = 35110880.

The previous prime is 70221743. The next prime is 70221779. The reversal of 70221776 is 67712207.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37503376 + 32718400 = 6124^2 + 5720^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70221779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194415 + ... + 2194446.

Almost surely, 2^70221776 is an apocalyptic number.

It is an amenable number.

70221776 is a deficient number, since it is larger than the sum of its proper divisors (65832946).

70221776 is a wasteful number, since it uses less digits than its factorization.

70221776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388869 (or 4388863 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 70221776 is about 8379.8434352916. The cubic root of 70221776 is about 412.5633102704.

The spelling of 70221776 in words is "seventy million, two hundred twenty-one thousand, seven hundred seventy-six".