80620511 has 4 divisors (see below), whose sum is σ = 85362912. Its totient is φ = 75878112.

The previous prime is 80620499. The next prime is 80620531. The reversal of 80620511 is 11502608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80620511 - 2²⁶ = 13511647 is a prime.

It is a super-2 number, since 2×80620511² = 12999333587802242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80620531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371175 + ... + 2371208.

It is an arithmetic number, because the mean of its divisors is an integer number (21340728).

Almost surely, 2^80620511 is an apocalyptic number.

80620511 is a deficient number, since it is larger than the sum of its proper divisors (4742401).

80620511 is a wasteful number, since it uses less digits than its factorization.

80620511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742400.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 80620511 is about 8978.8925263643. The cubic root of 80620511 is about 431.9981120602.

The spelling of 80620511 in words is "eighty million, six hundred twenty thousand, five hundred eleven".