61672758 has 16 divisors (see below), whose sum is σ = 140966400. Its totient is φ = 17620776.

The previous prime is 61672757. The next prime is 61672781. The reversal of 61672758 is 85727616.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1468399 = 61672758 / (6 + 1 + 6 + 7 + 2 + 7 + 5 + 8).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61672757) 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, 734158 + ... + 734241.

It is an arithmetic number, because the mean of its divisors is an integer number (8810400).

Almost surely, 2^61672758 is an apocalyptic number.

61672758 is an abundant number, since it is smaller than the sum of its proper divisors (79293642).

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

61672758 is a wasteful number, since it uses less digits than its factorization.

61672758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468411.

The product of its digits is 141120, while the sum is 42.

The square root of 61672758 is about 7853.2004940661. The cubic root of 61672758 is about 395.0915944189.

The spelling of 61672758 in words is "sixty-one million, six hundred seventy-two thousand, seven hundred fifty-eight".