70421770 has 16 divisors (see below), whose sum is σ = 130848768. Its totient is φ = 27259920.

The previous prime is 70421737. The next prime is 70421777. The reversal of 70421770 is 7712407.

It is not an unprimeable number, because it can be changed into a prime (70421777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113274 + ... + 113893.

It is an arithmetic number, because the mean of its divisors is an integer number (8178048).

Almost surely, 2^70421770 is an apocalyptic number.

70421770 is a deficient number, since it is larger than the sum of its proper divisors (60426998).

70421770 is a wasteful number, since it uses less digits than its factorization.

70421770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227205.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 70421770 is about 8391.7679901198. The cubic root of 70421770 is about 412.9546038001.

The spelling of 70421770 in words is "seventy million, four hundred twenty-one thousand, seven hundred seventy".