61308970 has 32 divisors (see below), whose sum is σ = 119579328. Its totient is φ = 22541568.

The previous prime is 61308913. The next prime is 61308983. The reversal of 61308970 is 7980316.

61308970 = 1173² + 1174² + ... + 1215².

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3117 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (3736854).

Almost surely, 2^61308970 is an apocalyptic number.

61308970 is a deficient number, since it is larger than the sum of its proper divisors (58270358).

61308970 is a wasteful number, since it uses less digits than its factorization.

61308970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8454.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 61308970 is about 7830.0044699860. The cubic root of 61308970 is about 394.3132220309.

The spelling of 61308970 in words is "sixty-one million, three hundred eight thousand, nine hundred seventy".