70649149 has 2 divisors, whose sum is σ = 70649150. Its totient is φ = 70649148.

The previous prime is 70649107. The next prime is 70649153. The reversal of 70649149 is 94194607.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70392100 + 257049 = 8390^2 + 507^2 .

It is a cyclic number.

It is not a de Polignac number, because 70649149 - 2¹³ = 70640957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70649749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35324574 + 35324575.

It is an arithmetic number, because the mean of its divisors is an integer number (35324575).

Almost surely, 2^70649149 is an apocalyptic number.

It is an amenable number.

70649149 is a deficient number, since it is larger than the sum of its proper divisors (1).

70649149 is an equidigital number, since it uses as much as digits as its factorization.

70649149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 70649149 is about 8405.3048130333. The cubic root of 70649149 is about 413.3985779045.

The spelling of 70649149 in words is "seventy million, six hundred forty-nine thousand, one hundred forty-nine".