70729970 has 16 divisors (see below), whose sum is σ = 134015040. Its totient is φ = 26802864.

The previous prime is 70729963. The next prime is 70729993. The reversal of 70729970 is 7992707.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185942 + ... + 186321.

It is an arithmetic number, because the mean of its divisors is an integer number (8375940).

Almost surely, 2^70729970 is an apocalyptic number.

70729970 is a deficient number, since it is larger than the sum of its proper divisors (63285070).

70729970 is a wasteful number, since it uses less digits than its factorization.

70729970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372289.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 70729970 is about 8410.1111764352. Note that the first 4 decimals coincide. The cubic root of 70729970 is about 413.5561573160.

The spelling of 70729970 in words is "seventy million, seven hundred twenty-nine thousand, nine hundred seventy".