70420951 has 2 divisors, whose sum is σ = 70420952. Its totient is φ = 70420950.

The previous prime is 70420949. The next prime is 70420969. The reversal of 70420951 is 15902407.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70420951 - 2¹ = 70420949 is a prime.

It is a super-2 number, since 2×70420951² = 9918220679488802, which contains 22 as substring.

Together with 70420949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70420921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35210475 + 35210476.

It is an arithmetic number, because the mean of its divisors is an integer number (35210476).

Almost surely, 2^70420951 is an apocalyptic number.

70420951 is a deficient number, since it is larger than the sum of its proper divisors (1).

70420951 is an equidigital number, since it uses as much as digits as its factorization.

70420951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 70420951 is about 8391.7191921560. The cubic root of 70420951 is about 412.9530029167.

The spelling of 70420951 in words is "seventy million, four hundred twenty thousand, nine hundred fifty-one".