65761087 has 6 divisors (see below), whose sum is σ = 76497648. Its totient is φ = 56366604.

The previous prime is 65761081. The next prime is 65761097. The reversal of 65761087 is 78016756.

It is a de Polignac number, because none of the positive numbers 2^k-65761087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65761081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 670983 + ... + 671080.

It is an arithmetic number, because the mean of its divisors is an integer number (12749608).

Almost surely, 2^65761087 is an apocalyptic number.

65761087 is a deficient number, since it is larger than the sum of its proper divisors (10736561).

65761087 is a wasteful number, since it uses less digits than its factorization.

65761087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342077 (or 1342070 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 65761087 is about 8109.3209950032. The cubic root of 65761087 is about 403.6357838128.

The spelling of 65761087 in words is "sixty-five million, seven hundred sixty-one thousand, eighty-seven".