70623977 has 2 divisors, whose sum is σ = 70623978. Its totient is φ = 70623976.

The previous prime is 70623929. The next prime is 70623991. The reversal of 70623977 is 77932607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64577296 + 6046681 = 8036^2 + 2459^2 .

It is a cyclic number.

It is not a de Polignac number, because 70623977 - 2¹² = 70619881 is a prime.

It is a super-2 number, since 2×70623977² = 9975492254593058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70623277) 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, 35311988 + 35311989.

It is an arithmetic number, because the mean of its divisors is an integer number (35311989).

Almost surely, 2^70623977 is an apocalyptic number.

It is an amenable number.

70623977 is a deficient number, since it is larger than the sum of its proper divisors (1).

70623977 is an equidigital number, since it uses as much as digits as its factorization.

70623977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 41.

The square root of 70623977 is about 8403.8072919362. The cubic root of 70623977 is about 413.3494746703.

The spelling of 70623977 in words is "seventy million, six hundred twenty-three thousand, nine hundred seventy-seven".