61946478 has 32 divisors (see below), whose sum is σ = 150174720. Its totient is φ = 18771480.

The previous prime is 61946471. The next prime is 61946483. The reversal of 61946478 is 87464916.

It is a super-2 number, since 2×61946478² = 7674732273208968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61946471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51550 + ... + 52737.

It is an arithmetic number, because the mean of its divisors is an integer number (4692960).

Almost surely, 2^61946478 is an apocalyptic number.

61946478 is an abundant number, since it is smaller than the sum of its proper divisors (88228242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61946478 is a wasteful number, since it uses less digits than its factorization.

61946478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104309 (or 104303 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 61946478 is about 7870.6084898183. The cubic root of 61946478 is about 395.6752387853.

The spelling of 61946478 in words is "sixty-one million, nine hundred forty-six thousand, four hundred seventy-eight".