61468978 has 8 divisors (see below), whose sum is σ = 92586780. Its totient is φ = 30606720.

The previous prime is 61468969. The next prime is 61468987. The reversal of 61468978 is 87986416.

61468978 is nontrivially palindromic in base 13.

It is an interprime number because it is at equal distance from previous prime (61468969) and next prime (61468987).

It can be written as a sum of positive squares in 2 ways, for example, as 60886809 + 582169 = 7803^2 + 763^2 .

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

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, 63283 + ... + 64246.

Almost surely, 2^61468978 is an apocalyptic number.

61468978 is a deficient number, since it is larger than the sum of its proper divisors (31117802).

61468978 is a wasteful number, since it uses less digits than its factorization.

61468978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127772.

The product of its digits is 580608, while the sum is 49.

The square root of 61468978 is about 7840.2154307136. The cubic root of 61468978 is about 394.6559585082.

The spelling of 61468978 in words is "sixty-one million, four hundred sixty-eight thousand, nine hundred seventy-eight".