75047621 has 16 divisors (see below), whose sum is σ = 87436800. Its totient is φ = 63739200.

The previous prime is 75047611. The next prime is 75047627. The reversal of 75047621 is 12674057.

It is a cyclic number.

It is not a de Polignac number, because 75047621 - 2¹⁰ = 75046597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75047627) 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, 6095 + ... + 13683.

It is an arithmetic number, because the mean of its divisors is an integer number (5464800).

Almost surely, 2^75047621 is an apocalyptic number.

It is an amenable number.

75047621 is a deficient number, since it is larger than the sum of its proper divisors (12389179).

75047621 is a wasteful number, since it uses less digits than its factorization.

75047621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 75047621 is about 8663.0030012692. The cubic root of 75047621 is about 421.8055695599.

The spelling of 75047621 in words is "seventy-five million, forty-seven thousand, six hundred twenty-one".