70629121 has 2 divisors, whose sum is σ = 70629122. Its totient is φ = 70629120.

The previous prime is 70629107. The next prime is 70629157. The reversal of 70629121 is 12192607.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68558400 + 2070721 = 8280^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 70629121 - 2⁵ = 70629089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70629121.

It is not a weakly prime, because it can be changed into another prime (70629161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35314560 + 35314561.

It is an arithmetic number, because the mean of its divisors is an integer number (35314561).

Almost surely, 2^70629121 is an apocalyptic number.

It is an amenable number.

70629121 is a deficient number, since it is larger than the sum of its proper divisors (1).

70629121 is an equidigital number, since it uses as much as digits as its factorization.

70629121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 70629121 is about 8404.1133381220. The cubic root of 70629121 is about 413.3595100632.

The spelling of 70629121 in words is "seventy million, six hundred twenty-nine thousand, one hundred twenty-one".