58720661 has 4 divisors (see below), whose sum is σ = 59828652. Its totient is φ = 57612672.

The previous prime is 58720657. The next prime is 58720663. The reversal of 58720661 is 16602785.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16602785 = 5 ⋅3320557.

It can be written as a sum of positive squares in 2 ways, for example, as 25150225 + 33570436 = 5015^2 + 5794^2 .

It is a cyclic number.

It is not a de Polignac number, because 58720661 - 2² = 58720657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58720663) 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, 553916 + ... + 554021.

It is an arithmetic number, because the mean of its divisors is an integer number (14957163).

Almost surely, 2^58720661 is an apocalyptic number.

It is an amenable number.

58720661 is a deficient number, since it is larger than the sum of its proper divisors (1107991).

58720661 is a wasteful number, since it uses less digits than its factorization.

58720661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107990.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 58720661 is about 7662.9407540448. The cubic root of 58720661 is about 388.6842819952.

The spelling of 58720661 in words is "fifty-eight million, seven hundred twenty thousand, six hundred sixty-one".