61726438 has 4 divisors (see below), whose sum is σ = 92589660. Its totient is φ = 30863218.

The previous prime is 61726433. The next prime is 61726447. The reversal of 61726438 is 83462716.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 61726397 and 61726406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61726433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15431608 + ... + 15431611.

It is an arithmetic number, because the mean of its divisors is an integer number (23147415).

Almost surely, 2^61726438 is an apocalyptic number.

61726438 is a deficient number, since it is larger than the sum of its proper divisors (30863222).

61726438 is a wasteful number, since it uses less digits than its factorization.

61726438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30863221.

The product of its digits is 48384, while the sum is 37.

The square root of 61726438 is about 7856.6174655509. The cubic root of 61726438 is about 395.2061904856.

The spelling of 61726438 in words is "sixty-one million, seven hundred twenty-six thousand, four hundred thirty-eight".