70505930 has 16 divisors (see below), whose sum is σ = 138448224. Its totient is φ = 25638480.

The previous prime is 70505917. The next prime is 70505933. The reversal of 70505930 is 3950507.

It is a junction number, because it is equal to n+sod(n) for n = 70505893 and 70505902.

It is not an unprimeable number, because it can be changed into a prime (70505933) 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, 320372 + ... + 320591.

It is an arithmetic number, because the mean of its divisors is an integer number (8653014).

Almost surely, 2^70505930 is an apocalyptic number.

70505930 is a deficient number, since it is larger than the sum of its proper divisors (67942294).

70505930 is a wasteful number, since it uses less digits than its factorization.

70505930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640981.

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 70505930 is about 8396.7809308091. The cubic root of 70505930 is about 413.1190435933.

The spelling of 70505930 in words is "seventy million, five hundred five thousand, nine hundred thirty".