70667501 has 2 divisors, whose sum is σ = 70667502. Its totient is φ = 70667500.

The previous prime is 70667491. The next prime is 70667503. The reversal of 70667501 is 10576607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41615401 + 29052100 = 6451^2 + 5390^2 .

It is a cyclic number.

It is not a de Polignac number, because 70667501 - 2⁶ = 70667437 is a prime.

Together with 70667503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70667503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35333750 + 35333751.

It is an arithmetic number, because the mean of its divisors is an integer number (35333751).

Almost surely, 2^70667501 is an apocalyptic number.

It is an amenable number.

70667501 is a deficient number, since it is larger than the sum of its proper divisors (1).

70667501 is an equidigital number, since it uses as much as digits as its factorization.

70667501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 70667501 is about 8406.3964336688. The cubic root of 70667501 is about 413.4343699557.

The spelling of 70667501 in words is "seventy million, six hundred sixty-seven thousand, five hundred one".