61030387 has 4 divisors (see below), whose sum is σ = 66578616. Its totient is φ = 55482160.

The previous prime is 61030379. The next prime is 61030429. The reversal of 61030387 is 78303016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61030387 - 2³ = 61030379 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61030327) 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, 2774098 + ... + 2774119.

It is an arithmetic number, because the mean of its divisors is an integer number (16644654).

Almost surely, 2^61030387 is an apocalyptic number.

61030387 is a deficient number, since it is larger than the sum of its proper divisors (5548229).

61030387 is a wasteful number, since it uses less digits than its factorization.

61030387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5548228.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 61030387 is about 7812.1947620371. The cubic root of 61030387 is about 393.7150726724.

The spelling of 61030387 in words is "sixty-one million, thirty thousand, three hundred eighty-seven".