61678654 has 8 divisors (see below), whose sum is σ = 95502528. Its totient is φ = 29844480.

The previous prime is 61678651. The next prime is 61678723. The reversal of 61678654 is 45687616.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61678654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61678651) 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, 497347 + ... + 497470.

It is an arithmetic number, because the mean of its divisors is an integer number (11937816).

Almost surely, 2^61678654 is an apocalyptic number.

61678654 is a deficient number, since it is larger than the sum of its proper divisors (33823874).

61678654 is a wasteful number, since it uses less digits than its factorization.

61678654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994850.

The product of its digits is 241920, while the sum is 43.

The square root of 61678654 is about 7853.5758734477. The cubic root of 61678654 is about 395.1041844499.

The spelling of 61678654 in words is "sixty-one million, six hundred seventy-eight thousand, six hundred fifty-four".