61293689 has 4 divisors (see below), whose sum is σ = 63958656. Its totient is φ = 58628724.

The previous prime is 61293671. The next prime is 61293691. The reversal of 61293689 is 98639216.

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-61293689 is a prime.

It is a super-2 number, since 2×61293689² = 7513832622457442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61293889) 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, 1332449 + ... + 1332494.

It is an arithmetic number, because the mean of its divisors is an integer number (15989664).

Almost surely, 2^61293689 is an apocalyptic number.

It is an amenable number.

61293689 is a deficient number, since it is larger than the sum of its proper divisors (2664967).

61293689 is a wasteful number, since it uses less digits than its factorization.

61293689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664966.

The product of its digits is 139968, while the sum is 44.

The square root of 61293689 is about 7829.0286115201. The cubic root of 61293689 is about 394.2804590109.

The spelling of 61293689 in words is "sixty-one million, two hundred ninety-three thousand, six hundred eighty-nine".