75720701 has 4 divisors (see below), whose sum is σ = 86537952. Its totient is φ = 64903452.

The previous prime is 75720691. The next prime is 75720709. The reversal of 75720701 is 10702757.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75720701 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 (75720709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5408615 + ... + 5408628.

It is an arithmetic number, because the mean of its divisors is an integer number (21634488).

Almost surely, 2^75720701 is an apocalyptic number.

It is an amenable number.

75720701 is a deficient number, since it is larger than the sum of its proper divisors (10817251).

75720701 is a wasteful number, since it uses less digits than its factorization.

75720701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10817250.

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 75720701 is about 8701.7642464043. The cubic root of 75720701 is about 423.0628349596.

The spelling of 75720701 in words is "seventy-five million, seven hundred twenty thousand, seven hundred one".