61437970 has 64 divisors (see below), whose sum is σ = 127733760. Its totient is φ = 21067200.

The previous prime is 61437953. The next prime is 61437973. The reversal of 61437970 is 7973416.

It is not an unprimeable number, because it can be changed into a prime (61437973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146421 + ... + 146839.

It is an arithmetic number, because the mean of its divisors is an integer number (1995840).

Almost surely, 2^61437970 is an apocalyptic number.

61437970 is an abundant number, since it is smaller than the sum of its proper divisors (66295790).

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

61437970 is a wasteful number, since it uses less digits than its factorization.

61437970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 61437970 is about 7838.2376845819. The cubic root of 61437970 is about 394.5895860026.

The spelling of 61437970 in words is "sixty-one million, four hundred thirty-seven thousand, nine hundred seventy".