61739340 has 48 divisors (see below), whose sum is σ = 186170208. Its totient is φ = 15197184.

The previous prime is 61739323. The next prime is 61739351. The reversal of 61739340 is 4393716.

It is a super-2 number, since 2×61739340² = 7623492207271200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38797 + ... + 40356.

It is an arithmetic number, because the mean of its divisors is an integer number (3878546).

Almost surely, 2^61739340 is an apocalyptic number.

61739340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61739340 is an abundant number, since it is smaller than the sum of its proper divisors (124430868).

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

61739340 is a wasteful number, since it uses less digits than its factorization.

61739340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79178 (or 79176 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 61739340 is about 7857.4385139179. The cubic root of 61739340 is about 395.2337237718.

The spelling of 61739340 in words is "sixty-one million, seven hundred thirty-nine thousand, three hundred forty".