87755407 has 2 divisors, whose sum is σ = 87755408. Its totient is φ = 87755406.

The previous prime is 87755387. The next prime is 87755467. The reversal of 87755407 is 70455778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87755407 - 2¹¹ = 87753359 is a prime.

It is a super-2 number, since 2×87755407² = 15402022915471298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87755467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43877703 + 43877704.

It is an arithmetic number, because the mean of its divisors is an integer number (43877704).

Almost surely, 2^87755407 is an apocalyptic number.

87755407 is a deficient number, since it is larger than the sum of its proper divisors (1).

87755407 is an equidigital number, since it uses as much as digits as its factorization.

87755407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 274400, while the sum is 43.

The square root of 87755407 is about 9367.7855974611. The cubic root of 87755407 is about 444.3835372624.

The spelling of 87755407 in words is "eighty-seven million, seven hundred fifty-five thousand, four hundred seven".