61217438 has 8 divisors (see below), whose sum is σ = 93558888. Its totient is φ = 30031144.

The previous prime is 61217419. The next prime is 61217441. The reversal of 61217438 is 83471216.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288656 + ... + 288867.

It is an arithmetic number, because the mean of its divisors is an integer number (11694861).

Almost surely, 2^61217438 is an apocalyptic number.

61217438 is a deficient number, since it is larger than the sum of its proper divisors (32341450).

61217438 is a wasteful number, since it uses less digits than its factorization.

61217438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577578.

The product of its digits is 8064, while the sum is 32.

The square root of 61217438 is about 7824.1573348189. The cubic root of 61217438 is about 394.1168926617.

The spelling of 61217438 in words is "sixty-one million, two hundred seventeen thousand, four hundred thirty-eight".