61026387 has 4 divisors (see below), whose sum is σ = 81368520. Its totient is φ = 40684256.

The previous prime is 61026359. The next prime is 61026389. The reversal of 61026387 is 78362016.

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 61026387 - 2⁸ = 61026131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61026389) 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, 10171062 + ... + 10171067.

It is an arithmetic number, because the mean of its divisors is an integer number (20342130).

Almost surely, 2^61026387 is an apocalyptic number.

61026387 is a deficient number, since it is larger than the sum of its proper divisors (20342133).

61026387 is a wasteful number, since it uses less digits than its factorization.

61026387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20342132.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 61026387 is about 7811.9387478397. The cubic root of 61026387 is about 393.7064709754.

The spelling of 61026387 in words is "sixty-one million, twenty-six thousand, three hundred eighty-seven".