61697378 has 8 divisors (see below), whose sum is σ = 95531520. Its totient is φ = 29853540.

The previous prime is 61697371. The next prime is 61697387. The reversal of 61697378 is 87379616.

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

It is not an unprimeable number, because it can be changed into a prime (61697371) 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, 497498 + ... + 497621.

It is an arithmetic number, because the mean of its divisors is an integer number (11941440).

Almost surely, 2^61697378 is an apocalyptic number.

61697378 is a deficient number, since it is larger than the sum of its proper divisors (33834142).

61697378 is a wasteful number, since it uses less digits than its factorization.

61697378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995152.

The product of its digits is 381024, while the sum is 47.

The square root of 61697378 is about 7854.7678514390. The cubic root of 61697378 is about 395.1441614479.

The spelling of 61697378 in words is "sixty-one million, six hundred ninety-seven thousand, three hundred seventy-eight".