79787537 has 2 divisors, whose sum is σ = 79787538. Its totient is φ = 79787536.

The previous prime is 79787473. The next prime is 79787597. The reversal of 79787537 is 73578797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50183056 + 29604481 = 7084^2 + 5441^2 .

It is a cyclic number.

It is not a de Polignac number, because 79787537 - 2⁶ = 79787473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79787597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39893768 + 39893769.

It is an arithmetic number, because the mean of its divisors is an integer number (39893769).

Almost surely, 2^79787537 is an apocalyptic number.

It is an amenable number.

79787537 is a deficient number, since it is larger than the sum of its proper divisors (1).

79787537 is an equidigital number, since it uses as much as digits as its factorization.

79787537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2593080, while the sum is 53.

The square root of 79787537 is about 8932.3869710173. The cubic root of 79787537 is about 430.5051517777.

The spelling of 79787537 in words is "seventy-nine million, seven hundred eighty-seven thousand, five hundred thirty-seven".