87764741 has 2 divisors, whose sum is σ = 87764742. Its totient is φ = 87764740.

The previous prime is 87764737. The next prime is 87764749. The reversal of 87764741 is 14746778.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77176225 + 10588516 = 8785^2 + 3254^2 .

It is a cyclic number.

It is not a de Polignac number, because 87764741 - 2² = 87764737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87764692 and 87764701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87764749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43882370 + 43882371.

It is an arithmetic number, because the mean of its divisors is an integer number (43882371).

Almost surely, 2^87764741 is an apocalyptic number.

It is an amenable number.

87764741 is a deficient number, since it is larger than the sum of its proper divisors (1).

87764741 is an equidigital number, since it uses as much as digits as its factorization.

87764741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 44.

The square root of 87764741 is about 9368.2837809281. The cubic root of 87764741 is about 444.3992921468.

The spelling of 87764741 in words is "eighty-seven million, seven hundred sixty-four thousand, seven hundred forty-one".