75563761 has 16 divisors (see below), whose sum is σ = 93308544. Its totient is φ = 59589504.

The previous prime is 75563749. The next prime is 75563783. The reversal of 75563761 is 16736557.

It is a happy number.

It is not a de Polignac number, because 75563761 - 2⁷ = 75563633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75563791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30381 + ... + 32773.

It is an arithmetic number, because the mean of its divisors is an integer number (5831784).

Almost surely, 2^75563761 is an apocalyptic number.

It is an amenable number.

75563761 is a deficient number, since it is larger than the sum of its proper divisors (17744783).

75563761 is a wasteful number, since it uses less digits than its factorization.

75563761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its digits is 132300, while the sum is 40.

The square root of 75563761 is about 8692.7418574349. The cubic root of 75563761 is about 422.7703504116.

It can be divided in two parts, 755 and 63761, that added together give a square (64516 = 254²).

The spelling of 75563761 in words is "seventy-five million, five hundred sixty-three thousand, seven hundred sixty-one".