70556149 has 2 divisors, whose sum is σ = 70556150. Its totient is φ = 70556148.

The previous prime is 70556131. The next prime is 70556191. The reversal of 70556149 is 94165507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 15944049 = 7390^2 + 3993^2 .

It is a cyclic number.

It is not a de Polignac number, because 70556149 - 2¹¹ = 70554101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70559149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35278074 + 35278075.

It is an arithmetic number, because the mean of its divisors is an integer number (35278075).

Almost surely, 2^70556149 is an apocalyptic number.

It is an amenable number.

70556149 is a deficient number, since it is larger than the sum of its proper divisors (1).

70556149 is an equidigital number, since it uses as much as digits as its factorization.

70556149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 70556149 is about 8399.7707706818. The cubic root of 70556149 is about 413.2171039103.

The spelling of 70556149 in words is "seventy million, five hundred fifty-six thousand, one hundred forty-nine".