61780348 has 12 divisors (see below), whose sum is σ = 123560752. Its totient is φ = 26477280.

The previous prime is 61780339. The next prime is 61780349. The reversal of 61780348 is 84308716.

It is a happy number.

61780348 is an admirable number.

It is a super-2 number, since 2×61780348² = 7633622798002208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61780349) 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, 1103193 + ... + 1103248.

Almost surely, 2^61780348 is an apocalyptic number.

It is an amenable number.

61780348 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61780348 is a wasteful number, since it uses less digits than its factorization.

61780348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206452 (or 2206450 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 61780348 is about 7860.0475825532. The cubic root of 61780348 is about 395.3212107097.

It can be divided in two parts, 61780 and 348, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 61780348 in words is "sixty-one million, seven hundred eighty thousand, three hundred forty-eight".