84720967 has 2 divisors, whose sum is σ = 84720968. Its totient is φ = 84720966.

The previous prime is 84720949. The next prime is 84720971. The reversal of 84720967 is 76902748.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84720967 - 2¹¹ = 84718919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84720997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42360483 + 42360484.

It is an arithmetic number, because the mean of its divisors is an integer number (42360484).

Almost surely, 2^84720967 is an apocalyptic number.

84720967 is a deficient number, since it is larger than the sum of its proper divisors (1).

84720967 is an equidigital number, since it uses as much as digits as its factorization.

84720967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 84720967 is about 9204.3993285820. The cubic root of 84720967 is about 439.2013179938.

The spelling of 84720967 in words is "eighty-four million, seven hundred twenty thousand, nine hundred sixty-seven".