61023813 has 8 divisors (see below), whose sum is σ = 83096448. Its totient is φ = 39816864.

The previous prime is 61023803. The next prime is 61023817. The reversal of 61023813 is 31832016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61023813 - 2⁴ = 61023797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61023817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216256 + ... + 216537.

It is an arithmetic number, because the mean of its divisors is an integer number (10387056).

Almost surely, 2^61023813 is an apocalyptic number.

It is an amenable number.

61023813 is a deficient number, since it is larger than the sum of its proper divisors (22072635).

61023813 is a wasteful number, since it uses less digits than its factorization.

61023813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432843.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 61023813 is about 7811.7739982670. The cubic root of 61023813 is about 393.7009355846.

Adding to 61023813 its reverse (31832016), we get a palindrome (92855829).

The spelling of 61023813 in words is "sixty-one million, twenty-three thousand, eight hundred thirteen".