80629837 has 2 divisors, whose sum is σ = 80629838. Its totient is φ = 80629836.

The previous prime is 80629763. The next prime is 80629841. The reversal of 80629837 is 73892608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80622441 + 7396 = 8979^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 80629837 - 2⁷ = 80629709 is a prime.

It is a super-2 number, since 2×80629837² = 13002341229293138, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80629793 and 80629802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80629897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40314918 + 40314919.

It is an arithmetic number, because the mean of its divisors is an integer number (40314919).

Almost surely, 2^80629837 is an apocalyptic number.

It is an amenable number.

80629837 is a deficient number, since it is larger than the sum of its proper divisors (1).

80629837 is an equidigital number, since it uses as much as digits as its factorization.

80629837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 80629837 is about 8979.4118404270. The cubic root of 80629837 is about 432.0147689424.

The spelling of 80629837 in words is "eighty million, six hundred twenty-nine thousand, eight hundred thirty-seven".