70629813 has 10 divisors (see below), whose sum is σ = 105508854. Its totient is φ = 47086488.

The previous prime is 70629799. The next prime is 70629851. The reversal of 70629813 is 31892607.

It can be written as a sum of positive squares in only one way, i.e., 56205009 + 14424804 = 7497^2 + 3798^2 .

It is not a de Polignac number, because 70629813 - 2¹⁴ = 70613429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70629863) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 435906 + ... + 436067.

Almost surely, 2^70629813 is an apocalyptic number.

It is an amenable number.

70629813 is a deficient number, since it is larger than the sum of its proper divisors (34879041).

70629813 is an equidigital number, since it uses as much as digits as its factorization.

70629813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871985 (or 871976 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 70629813 is about 8404.1545083369. The cubic root of 70629813 is about 413.3608600439.

The spelling of 70629813 in words is "seventy million, six hundred twenty-nine thousand, eight hundred thirteen".