61534070 has 32 divisors (see below), whose sum is σ = 123137280. Its totient is φ = 21985920.

The previous prime is 61534051. The next prime is 61534079. The reversal of 61534070 is 7043516.

61534070 = T₉₈ + T₉₉ + ... + T₇₁₇.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61534079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3605 + ... + 11664.

It is an arithmetic number, because the mean of its divisors is an integer number (3848040).

Almost surely, 2^61534070 is an apocalyptic number.

61534070 is an abundant number, since it is smaller than the sum of its proper divisors (61603210).

61534070 is a wasteful number, since it uses less digits than its factorization.

61534070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15320.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 61534070 is about 7844.3654937796. The cubic root of 61534070 is about 394.7952151117.

Adding to 61534070 its reverse (7043516), we get a palindrome (68577586).

The spelling of 61534070 in words is "sixty-one million, five hundred thirty-four thousand, seventy".