61439754 has 16 divisors (see below), whose sum is σ = 124360992. Its totient is φ = 20233008.

The previous prime is 61439743. The next prime is 61439759. The reversal of 61439754 is 45793416.

It is not an unprimeable number, because it can be changed into a prime (61439759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61189 + ... + 62184.

It is an arithmetic number, because the mean of its divisors is an integer number (7772562).

Almost surely, 2^61439754 is an apocalyptic number.

61439754 is an abundant number, since it is smaller than the sum of its proper divisors (62921238).

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

61439754 is a wasteful number, since it uses less digits than its factorization.

61439754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123461.

The product of its digits is 90720, while the sum is 39.

The square root of 61439754 is about 7838.3514848468. The cubic root of 61439754 is about 394.5934052531.

The spelling of 61439754 in words is "sixty-one million, four hundred thirty-nine thousand, seven hundred fifty-four".